[ScriptInterpreter] Remove ScriptInterpreterPythonImpl::Clear() (NFC)

This method is never called.

llvm-svn: 372190

lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPython.cpp

@@ -2212,18 +2212,6 @@ bool ScriptInterpreterPythonImpl::GetScriptedSummary(
   return ret_val;
 }
 
-void ScriptInterpreterPythonImpl::Clear() {
-  // Release any global variables that might have strong references to
-  // LLDB objects when clearing the python script interpreter.
-  Locker locker(this, Locker::AcquireLock, Locker::FreeAcquiredLock);
-
-  // This may be called as part of Py_Finalize.  In that case the modules are
-  // destroyed in random order and we can't guarantee that we can access these.
-  if (Py_IsInitialized())
-    PyRun_SimpleString("lldb.debugger = None; lldb.target = None; lldb.process "
-                       "= None; lldb.thread = None; lldb.frame = None");
-}
-
 bool ScriptInterpreterPythonImpl::BreakpointCallbackFunction(
     void *baton, StoppointCallbackContext *context, user_id_t break_id,
     user_id_t break_loc_id) {

lldb/source/Plugins/ScriptInterpreter/Python/ScriptInterpreterPythonImpl.h

@@ -188,8 +188,6 @@ public:
                           const TypeSummaryOptions &options,
                           std::string &retval) override;
 
-  void Clear() override;
-
   bool GetDocumentationForItem(const char *item, std::string &dest) override;
 
   bool GetShortHelpForCommandObject(StructuredData::GenericSP cmd_obj_sp,