[vm] Remove unused Class::RemoveFunction function

Change-Id: Ia5001d04c41e3463428e3f33b50f880f0627bde1
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/166852
Reviewed-by: Alexander Aprelev <aam@google.com>
Commit-Queue: Martin Kustermann <kustermann@google.com>

Author: mkustermann

runtime/vm/object.cc

@@ -3038,20 +3038,6 @@ void Class::AddFunction(const Function& function) const {
   }
 }
 
-void Class::RemoveFunction(const Function& function) const {
-  ASSERT(Thread::Current()->IsMutatorThread());
-  const Array& arr = Array::Handle(functions());
-  StorePointer(&raw_ptr()->functions_, Object::empty_array().raw());
-  StorePointer(&raw_ptr()->functions_hash_table_, Array::null());
-  Function& entry = Function::Handle();
-  for (intptr_t i = 0; i < arr.Length(); i++) {
-    entry ^= arr.At(i);
-    if (function.raw() != entry.raw()) {
-      AddFunction(entry);
-    }
-  }
-}
-
 FunctionPtr Class::FunctionFromIndex(intptr_t idx) const {
   const Array& funcs = Array::Handle(functions());
   if ((idx < 0) || (idx >= funcs.Length())) {

runtime/vm/object.h

@@ -1295,7 +1295,6 @@ class Class : public Object {
   ArrayPtr functions() const { return raw_ptr()->functions_; }
   void SetFunctions(const Array& value) const;
   void AddFunction(const Function& function) const;
-  void RemoveFunction(const Function& function) const;
   FunctionPtr FunctionFromIndex(intptr_t idx) const;
   intptr_t FindImplicitClosureFunctionIndex(const Function& needle) const;
   FunctionPtr ImplicitClosureFunctionFromIndex(intptr_t idx) const;