Remove obsolete Group tag

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

rubygem-pry.spec

@@ -4,7 +4,6 @@ Name: rubygem-%{gem_name}
 Version: 0.10.4
 Release: 6%{?dist}
 Summary: An IRB alternative and runtime developer console
-Group: Development/Languages
 License: MIT
 URL: http://pryrepl.org
 Source0: https://rubygems.org/gems/%{gem_name}-%{version}.gem
@@ -49,7 +48,6 @@ An IRB alternative and runtime developer console.
 
 %package doc
 Summary: Documentation for %{name}
-Group: Documentation
 Requires: %{name} = %{version}-%{release}
 BuildArch: noarch