Remove obsolete Group tag

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

rubygem-cookiejar.spec

@@ -4,7 +4,6 @@ Name: rubygem-%{gem_name}
 Version: 0.3.2
 Release: 11%{?dist}
 Summary: Parsing and returning cookies in Ruby
-Group: Development/Languages
 License: BSD	
 URL: https://github.com/dwaite/cookiejar
 Source0: https://rubygems.org/gems/cookiejar-%{version}.gem
@@ -27,7 +26,6 @@ string.
 
 %package doc
 Summary: Documentation for %{name}
-Group: Documentation
 Requires: %{name} = %{version}-%{release}
 BuildArch: noarch