Index: source/Plugins/SymbolFile/PDB/SymbolFilePDB.h
===================================================================
--- source/Plugins/SymbolFile/PDB/SymbolFilePDB.h
+++ source/Plugins/SymbolFile/PDB/SymbolFilePDB.h
@@ -252,7 +252,6 @@
   std::unique_ptr<llvm::pdb::IPDBSession> m_session_up;
   std::unique_ptr<llvm::pdb::PDBSymbolExe> m_global_scope_up;
   uint32_t m_cached_compile_unit_count;
-  std::unique_ptr<lldb_private::CompilerDeclContext> m_tu_decl_ctx_up;
 
   lldb_private::UniqueCStringMap<uint32_t> m_func_full_names;
   lldb_private::UniqueCStringMap<uint32_t> m_func_base_names;
Index: source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
===================================================================
--- source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
+++ source/Plugins/SymbolFile/PDB/SymbolFilePDB.cpp
@@ -124,7 +124,7 @@
 
 SymbolFilePDB::SymbolFilePDB(lldb_private::ObjectFile *object_file)
     : SymbolFile(object_file), m_session_up(), m_global_scope_up(),
-      m_cached_compile_unit_count(0), m_tu_decl_ctx_up() {}
+      m_cached_compile_unit_count(0) {}
 
 SymbolFilePDB::~SymbolFilePDB() {}
 
@@ -189,14 +189,6 @@
   if (!m_global_scope_up)
     m_global_scope_up = m_session_up->getGlobalScope();
   lldbassert(m_global_scope_up.get());
-
-  TypeSystem *type_system =
-      GetTypeSystemForLanguage(lldb::eLanguageTypeC_plus_plus);
-  ClangASTContext *clang_type_system =
-      llvm::dyn_cast_or_null<ClangASTContext>(type_system);
-  lldbassert(clang_type_system);
-  m_tu_decl_ctx_up = llvm::make_unique<CompilerDeclContext>(
-      type_system, clang_type_system->GetTranslationUnitDecl());
 }
 
 uint32_t SymbolFilePDB::GetNumCompileUnits() {