Remove obsolete Group tag

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

lua.spec

@@ -17,7 +17,6 @@ Name:           lua
 Version:        %{major_version}.5
 Release:        3%{?dist}
 Summary:        Powerful light-weight programming language
-Group:          Development/Languages
 License:        MIT
 URL:            http://www.lua.org/
 Source0:        http://www.lua.org/ftp/lua-%{version}.tar.gz
@@ -59,7 +58,6 @@ configuration, scripting, and rapid prototyping.
 
 %package devel
 Summary:        Development files for %{name}
-Group:          System Environment/Libraries
 Requires:       %{name}%{?_isa} = %{version}-%{release}
 Requires:       pkgconfig
 
@@ -75,7 +73,6 @@ This package contains the shared libraries for %{name}.
 
 %package static
 Summary:        Static library for %{name}
-Group:          System Environment/Libraries
 Requires:       %{name}%{?_isa} = %{version}-%{release}
 
 %description static