diff --git a/lldb/include/lldb/Target/TargetList.h b/lldb/include/lldb/Target/TargetList.h
--- a/lldb/include/lldb/Target/TargetList.h
+++ b/lldb/include/lldb/Target/TargetList.h
@@ -42,8 +42,6 @@
     return GetStaticBroadcasterClass();
   }
 
-  ~TargetList() override;
-
   /// Create a new Target.
   ///
   /// Clients must use this function to create a Target. This allows
diff --git a/lldb/source/Target/TargetList.cpp b/lldb/source/Target/TargetList.cpp
--- a/lldb/source/Target/TargetList.cpp
+++ b/lldb/source/Target/TargetList.cpp
@@ -42,12 +42,6 @@
   CheckInWithManager();
 }
 
-// Destructor
-TargetList::~TargetList() {
-  std::lock_guard<std::recursive_mutex> guard(m_target_list_mutex);
-  m_target_list.clear();
-}
-
 Status TargetList::CreateTarget(Debugger &debugger,
                                 llvm::StringRef user_exe_path,
                                 llvm::StringRef triple_str,