Fix issue of restoring wasm operand stack (#1721)

core/iwasm/interpreter/wasm_interp.h

@@ -89,18 +89,6 @@ wasm_interp_call_wasm(struct WASMModuleInstance *module_inst,
                       struct WASMFunctionInstance *function, uint32 argc,
                       uint32 argv[]);
 
-/**
- * @brief Restore the wasm stack frame to the last native frame or the begging
- * of the whole stack
- * @note e.g. for stack "begin --> interp --> interp", it will back to the
- * "begin", for stack "begin --> interp --> native --> interp", it will become
- * "begin --> interp --> native"
- *
- * @param exec_env the execution environment
- */
-void
-wasm_interp_restore_wasm_frame(struct WASMExecEnv *exec_env);
-
 #ifdef __cplusplus
 }
 #endif