make simple executor the default for OSS

Author: Krovatkin

torch/csrc/jit/runtime/profiling_graph_executor_impl.cpp

@@ -29,7 +29,7 @@ static std::atomic<bool> executor_mode{false};
 static std::atomic<bool> profiling_mode{false};
 #else
 static std::atomic<bool> executor_mode{true};
-static std::atomic<bool> profiling_mode{true};
+static std::atomic<bool> profiling_mode{false};
 #endif
 
 static std::atomic<size_t> num_profiled_runs{1};