Remove obsolete Group tag

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

debhelper.spec

@@ -11,7 +11,6 @@ Version:        11.4
 Release:        2%{?dist}
 Summary:        Helper programs for Debian rules
 
-Group:          Development/Tools
 License:        GPLv2+
 URL:            http://kitenet.net/~joey/code/debhelper/
 Source0:        http://ftp.de.debian.org/debian/pool/main/d/%{name}/%{name}_%{version}.tar.xz