Remove unused files and update license header of some files (#138)

core/shared-lib/platform/include/bh_definition.h

@@ -1,30 +0,0 @@
-/*
- * Copyright (C) 2019 Intel Corporation.  All rights reserved.
- * SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
- */
-
-#ifndef _BH_DEFINITION_H
-#define _BH_DEFINITION_H
-
-#include "bh_config.h"
-
-typedef enum {
-    BH_FAILED = -100,
-    BH_UNKOWN = -99,
-    BH_MAGIC_UNMATCH = -12,
-    BH_UNIMPLEMENTED = -11,
-    BH_INTR = -10,
-    BH_CLOSED = -9,
-    BH_BUFFER_OVERFLOW = -8, /* TODO: no used error, should remove*/
-    BH_NOT_SUPPORTED = -7,
-    BH_WEAR_OUT_VIOLATION = -6,
-    BH_NOT_FOUND = -5,
-    BH_INVALID_PARAMS = -4,
-    BH_ACCESS_DENIED = -3,
-    BH_OUT_OF_MEMORY = -2,
-    BH_INVALID = -1,
-    BH_SUCCESS = 0,
-    BH_TIMEOUT = 2
-} bh_status;
-
-#endif