Merge pull request #7580 from taosdata/fix/TD-6330

[TD-6330]<fix> fix free error

src/client/src/tscSQLParser.c

@@ -427,7 +427,6 @@ int32_t readFromFile(char *name, uint32_t *len, void **buf) {
     return TSDB_CODE_TSC_APP_ERROR;
   }
   close(fd);
-  tfree(*buf);
   return TSDB_CODE_SUCCESS;
 }