rem: s32 CARD_Delete(u32 chn,const char *filename)
add: s32 CARD_Delete(s32 chn,const char *filename)
context: s32 CARD_Delete(u32 chn,const char *filename){	s32 ret;#ifdef _CARD_DEBUG	printf("CARD_Delete(%d,%s)\n",chn,filename);#endif	if((ret=CARD_DeleteAsync(chn,filename,__card_synccallback))>=0) {		__card_sync(chn);	}	return ret;}