Remove obsolete Group tag

References: https://fedoraproject.org/wiki/Changes/Remove_Group_Tag

python-isodate.spec

@@ -9,7 +9,6 @@ Name:           python-%{modulename}
 Version:        0.5.4
 Release:        11%{?dist}
 Summary:        An ISO 8601 date/time/duration parser and formatter
-Group:          Development/Languages
 License:        BSD
 URL:            http://pypi.python.org/pypi/%{modulename}
 Source0:        http://pypi.python.org/packages/source/i/%{modulename}/%{modulename}-%{version}.tar.gz
@@ -52,7 +51,6 @@ Summary: %summary
 %if 0%{?with_python3}
 %package -n python3-%{modulename}
 Summary:        An ISO 8601 date/time/duration parser and formatter
-Group:          Development/Languages
 
 %description -n python3-%{modulename}
 This module implements ISO 8601 date, time and duration parsing. The