support fwk offline inference when ge_lib is not initialized

ge/hybrid/node_executor/aicore/aicore_task_compiler.cc

@@ -29,7 +29,6 @@ uint64_t kFakeSize = 0x10000000UL;
 REGISTER_TASK_COMPILER(AiCoreTaskCompiler);
 }
 std::mutex AiCoreTaskCompiler::mu_;
-std::mutex AiCoreTaskCompiler::init_mu_;
 
 Status AiCoreTaskCompiler::Initialize() {
   std::lock_guard<std::mutex> lk(mu_);