Remove dummy locals no longer needed.

* VAO initial state is not working yet - it gets reverted because the VAOs
  aren't marked as dirty (ie. initial state not needed because replay is
  accurate at the first replay, not out of sync) and not marked as written
  mid-frame (ie. restarting and replaying again shouldn't be out of sync as
  nothing was changed).

renderdoc/driver/gl/gl_manager.cpp

@@ -112,9 +112,6 @@ bool GLResourceManager::Serialise_InitialState(GLResource res)
 {
 	ResourceId Id = ResourceId();
 
-	Serialiser *m_pSerialiser = NULL;
-	LogState m_State = READING;
-
 	if(m_State >= WRITING)
 	{
 		Id = GetID(res);