diff --git a/lldb/include/lldb/Symbol/ClangASTImporter.h b/lldb/include/lldb/Symbol/ClangASTImporter.h
--- a/lldb/include/lldb/Symbol/ClangASTImporter.h
+++ b/lldb/include/lldb/Symbol/ClangASTImporter.h
@@ -30,57 +30,6 @@
 
 namespace lldb_private {
 
-class ClangASTMetrics {
-public:
-  static void DumpCounters(Log *log);
-  static void ClearLocalCounters() { local_counters = {0, 0, 0, 0, 0, 0}; }
-
-  static void RegisterVisibleQuery() {
-    ++global_counters.m_visible_query_count;
-    ++local_counters.m_visible_query_count;
-  }
-
-  static void RegisterLexicalQuery() {
-    ++global_counters.m_lexical_query_count;
-    ++local_counters.m_lexical_query_count;
-  }
-
-  static void RegisterLLDBImport() {
-    ++global_counters.m_lldb_import_count;
-    ++local_counters.m_lldb_import_count;
-  }
-
-  static void RegisterClangImport() {
-    ++global_counters.m_clang_import_count;
-    ++local_counters.m_clang_import_count;
-  }
-
-  static void RegisterDeclCompletion() {
-    ++global_counters.m_decls_completed_count;
-    ++local_counters.m_decls_completed_count;
-  }
-
-  static void RegisterRecordLayout() {
-    ++global_counters.m_record_layout_count;
-    ++local_counters.m_record_layout_count;
-  }
-
-private:
-  struct Counters {
-    uint64_t m_visible_query_count;
-    uint64_t m_lexical_query_count;
-    uint64_t m_lldb_import_count;
-    uint64_t m_clang_import_count;
-    uint64_t m_decls_completed_count;
-    uint64_t m_record_layout_count;
-  };
-
-  static Counters global_counters;
-  static Counters local_counters;
-
-  static void DumpCounters(Log *log, Counters &counters);
-};
-
 class ClangASTImporter {
 public:
   struct LayoutInfo {
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangASTSource.cpp
@@ -524,8 +524,6 @@
   } else if (!m_ast_importer_sp)
     return;
 
-  ClangASTMetrics::RegisterLexicalQuery();
-
   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
 
   const Decl *context_decl = dyn_cast<Decl>(decl_context);
@@ -671,8 +669,6 @@
 void ClangASTSource::FindExternalVisibleDecls(NameSearchContext &context) {
   assert(m_ast_context);
 
-  ClangASTMetrics::RegisterVisibleQuery();
-
   const ConstString name(context.m_decl_name.getAsString().c_str());
 
   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
@@ -1714,8 +1710,6 @@
                                       FieldOffsetMap &field_offsets,
                                       BaseOffsetMap &base_offsets,
                                       BaseOffsetMap &virtual_base_offsets) {
-  ClangASTMetrics::RegisterRecordLayout();
-
   static unsigned int invocation_id = 0;
   unsigned int current_id = invocation_id++;
 
@@ -2032,8 +2026,6 @@
   if (src_ast == nullptr)
     return CompilerType();
 
-  ClangASTMetrics::RegisterLLDBImport();
-
   SetImportInProgress(true);
 
   QualType copied_qual_type;
diff --git a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
--- a/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
+++ b/lldb/source/Plugins/ExpressionParser/Clang/ClangExpressionDeclMap.cpp
@@ -84,8 +84,6 @@
 
 bool ClangExpressionDeclMap::WillParse(ExecutionContext &exe_ctx,
                                        Materializer *materializer) {
-  ClangASTMetrics::ClearLocalCounters();
-
   EnableParserVars();
   m_parser_vars->m_exe_ctx = exe_ctx;
 
@@ -127,11 +125,6 @@
 }
 
 void ClangExpressionDeclMap::DidParse() {
-  Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
-
-  if (log)
-    ClangASTMetrics::DumpCounters(log);
-
   if (m_parser_vars) {
     for (size_t entity_index = 0, num_entities = m_found_entities.GetSize();
          entity_index < num_entities; ++entity_index) {
@@ -685,8 +678,6 @@
     NameSearchContext &context) {
   assert(m_ast_context);
 
-  ClangASTMetrics::RegisterVisibleQuery();
-
   const ConstString name(context.m_decl_name.getAsString().c_str());
 
   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
diff --git a/lldb/source/Symbol/ClangASTImporter.cpp b/lldb/source/Symbol/ClangASTImporter.cpp
--- a/lldb/source/Symbol/ClangASTImporter.cpp
+++ b/lldb/source/Symbol/ClangASTImporter.cpp
@@ -25,36 +25,6 @@
 using namespace lldb_private;
 using namespace clang;
 
-ClangASTMetrics::Counters ClangASTMetrics::global_counters = {0, 0, 0, 0, 0, 0};
-ClangASTMetrics::Counters ClangASTMetrics::local_counters = {0, 0, 0, 0, 0, 0};
-
-void ClangASTMetrics::DumpCounters(Log *log,
-                                   ClangASTMetrics::Counters &counters) {
-  LLDB_LOGF(log, "  Number of visible Decl queries by name     : %" PRIu64,
-            counters.m_visible_query_count);
-  LLDB_LOGF(log, "  Number of lexical Decl queries             : %" PRIu64,
-            counters.m_lexical_query_count);
-  LLDB_LOGF(log, "  Number of imports initiated by LLDB        : %" PRIu64,
-            counters.m_lldb_import_count);
-  LLDB_LOGF(log, "  Number of imports conducted by Clang       : %" PRIu64,
-            counters.m_clang_import_count);
-  LLDB_LOGF(log, "  Number of Decls completed                  : %" PRIu64,
-            counters.m_decls_completed_count);
-  LLDB_LOGF(log, "  Number of records laid out                 : %" PRIu64,
-            counters.m_record_layout_count);
-}
-
-void ClangASTMetrics::DumpCounters(Log *log) {
-  if (!log)
-    return;
-
-  LLDB_LOGF(log, "== ClangASTMetrics output ==");
-  LLDB_LOGF(log, "-- Global metrics --");
-  DumpCounters(log, global_counters);
-  LLDB_LOGF(log, "-- Local metrics --");
-  DumpCounters(log, local_counters);
-}
-
 clang::QualType ClangASTImporter::CopyType(clang::ASTContext *dst_ast,
                                            clang::ASTContext *src_ast,
                                            clang::QualType type) {
@@ -628,8 +598,6 @@
 }
 
 bool ClangASTImporter::CompleteTagDecl(clang::TagDecl *decl) {
-  ClangASTMetrics::RegisterDeclCompletion();
-
   DeclOrigin decl_origin = GetDeclOrigin(decl);
 
   if (!decl_origin.Valid())
@@ -651,8 +619,6 @@
 
 bool ClangASTImporter::CompleteTagDeclWithOrigin(clang::TagDecl *decl,
                                                  clang::TagDecl *origin_decl) {
-  ClangASTMetrics::RegisterDeclCompletion();
-
   clang::ASTContext *origin_ast_ctx = &origin_decl->getASTContext();
 
   if (!ClangASTContext::GetCompleteDecl(origin_ast_ctx, origin_decl))
@@ -675,8 +641,6 @@
 
 bool ClangASTImporter::CompleteObjCInterfaceDecl(
     clang::ObjCInterfaceDecl *interface_decl) {
-  ClangASTMetrics::RegisterDeclCompletion();
-
   DeclOrigin decl_origin = GetDeclOrigin(interface_decl);
 
   if (!decl_origin.Valid())
@@ -1037,8 +1001,6 @@
 
 void ClangASTImporter::ASTImporterDelegate::Imported(clang::Decl *from,
                                                      clang::Decl *to) {
-  ClangASTMetrics::RegisterClangImport();
-
   Log *log(lldb_private::GetLogIfAllCategoriesSet(LIBLLDB_LOG_EXPRESSIONS));
 
   // Some decls shouldn't be tracked here because they were not created by