[CplusPlus] ISVTableName is unused. NFCI.

[JDevlieghere]

Nice!

[teemperor]

LGTM

lldb/include/lldb/Target/CPPLanguageRuntime.h

lldb::LanguageType GetLanguageType() const override {
     return lldb::eLanguageTypeC_plus_plus;
   }
 
   static CPPLanguageRuntime *Get(Process &process) {
     return llvm::cast_or_null<CPPLanguageRuntime>(
         process.GetLanguageRuntime(lldb::eLanguageTypeC_plus_plus));
   }
 
-  virtual bool IsVTableName(const char *name) = 0;
-
   bool GetObjectDescription(Stream &str, ValueObject &object) override;
 
   bool GetObjectDescription(Stream &str, Value &value,
                             ExecutionContextScope *exe_scope) override;
 
   /// Obtain a ThreadPlan to get us into C++ constructs such as std::function.
   ///
   /// \param[in] thread

lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.h

public:
   bool isA(const void *ClassID) const override {
     return ClassID == &ID || CPPLanguageRuntime::isA(ClassID);
   }
 
   static bool classof(const LanguageRuntime *runtime) {
     return runtime->isA(&ID);
   }
 
-  bool IsVTableName(const char *name) override;
-
   bool GetDynamicTypeAndAddress(ValueObject &in_value,
                                 lldb::DynamicValueType use_dynamic,
                                 TypeAndOrName &class_type_or_name,
                                 Address &address,
                                 Value::ValueType &value_type) override;
 
   TypeAndOrName FixUpDynamicType(const TypeAndOrName &type_and_or_name,
                                  ValueObject &static_value) override;

lldb/source/Plugins/LanguageRuntime/CPlusPlus/ItaniumABI/ItaniumABILanguageRuntime.cpp

else if (static_type_flags.AllSet(eTypeIsReference))
       corrected_name.append(" &");
     // the parent type should be a correctly pointer'ed or referenc'ed type
     ret.SetCompilerType(static_type);
     ret.SetName(corrected_name.c_str());
   }
   return ret;
 }
 
-bool ItaniumABILanguageRuntime::IsVTableName(const char *name) {
-  if (name == nullptr)
-    return false;
-
-  // Can we maybe ask Clang about this?
-  return strstr(name, "_vptr$") == name;
-}
-
 // Static Functions
 LanguageRuntime *
 ItaniumABILanguageRuntime::CreateInstance(Process *process,
                                           lldb::LanguageType language) {
   // FIXME: We have to check the process and make sure we actually know that
   // this process supports
   // the Itanium ABI.
   if (language == eLanguageTypeC_plus_plus ||

lldb/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptRuntime.h

public:
 
   static bool IsRenderScriptModule(const lldb::ModuleSP &module_sp);
 
   static ModuleKind GetModuleKind(const lldb::ModuleSP &module_sp);
 
   static void ModulesDidLoad(const lldb::ProcessSP &process_sp,
                              const ModuleList &module_list);
 
-  bool IsVTableName(const char *name) override;
-
   bool GetDynamicTypeAndAddress(ValueObject &in_value,
                                 lldb::DynamicValueType use_dynamic,
                                 TypeAndOrName &class_type_or_name,
                                 Address &address,
                                 Value::ValueType &value_type) override;
 
   TypeAndOrName FixUpDynamicType(const TypeAndOrName &type_and_or_name,
                                  ValueObject &static_value) override;

lldb/source/Plugins/LanguageRuntime/RenderScript/RenderScriptRuntime/RenderScriptRuntime.cpp

 
 // PluginInterface protocol
 lldb_private::ConstString RenderScriptRuntime::GetPluginName() {
   return GetPluginNameStatic();
 }
 
 uint32_t RenderScriptRuntime::GetPluginVersion() { return 1; }
 
-bool RenderScriptRuntime::IsVTableName(const char *name) { return false; }
-
 bool RenderScriptRuntime::GetDynamicTypeAndAddress(
     ValueObject &in_value, lldb::DynamicValueType use_dynamic,
     TypeAndOrName &class_type_or_name, Address &address,
     Value::ValueType &value_type) {
   return false;
 }
 
 TypeAndOrName