Remove obsolete Group tag

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

uglify-js.spec

@@ -13,7 +13,6 @@ Name:           uglify-js
 Version:        2.8.22
 Release:        5%{?dist}
 Summary:        JavaScript parser, mangler/compressor and beautifier toolkit
-Group:          Development/Tools
 License:        BSD
 URL:            https://github.com/mishoo/UglifyJS2
 Source0:        https://github.com/mishoo/UglifyJS2/archive/v%{version}/uglify-js-%{version}.tar.gz
@@ -52,7 +51,6 @@ use within Node.js.
 
 %package -n js-uglify
 Summary: JavaScript parser, mangler/compressor and beautifier toolkit - core library
-Group: System Environment/Libraries
 
 Obsoletes: uglify-js-common < 2.2.5-4
 Provides: uglify-js-common = %{version}-%{release}