update import, forgot in https://trac.osgeo.org/grass/changeset/61854

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@61887 15284696-431f-4ddb-bdfa-cd5b030d7da7

lib/python/gunittest/testsuite/test_checkers.py

@@ -14,7 +14,7 @@ for details.
 """
 
 
-from grass.script.core import parse_key_val
+from grass.script.utils import parse_key_val
 
 import grass.gunittest
 from grass.gunittest.checkers import (values_equal, text_to_keyvalue,