dubug: add asserts to every object type's API functions

src/lv_core/lv_obj.h

@@ -966,12 +966,11 @@ bool lv_obj_is_focused(const lv_obj_t * obj);
 
 /**
  * Used in the signal callback to handle `LV_SIGNAL_GET_TYPE` signal
- * @param obj pointer to an object
  * @param buf pointer to `lv_obj_type_t`. (`param` i nteh signal callback)
  * @param name name of the object. E.g. "lv_btn". (Only teh pointer is saved)
  * @return LV_RES_OK
  */
-lv_res_t lv_obj_handle_get_type_signal(lv_obj_t * obj, lv_obj_type_t * buf, const char * name);
+lv_res_t lv_obj_handle_get_type_signal(lv_obj_type_t * buf, const char * name);
 
 /**********************
  *      MACROS