Remove obsolete Group tag

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

zziplib.spec

@@ -3,7 +3,6 @@ Name: zziplib
 Version: 0.13.69
 Release: 4%{?dist}
 License: LGPLv2+ or MPLv1.1
-Group: Applications/Archiving
 URL: http://zziplib.sourceforge.net/
 Source: https://github.com/gdraheim/zziplib/archive/v%{version}.tar.gz
 Patch0: zziplib-0.13.69-multilib.patch
@@ -35,7 +34,6 @@ which is actually used by the zip/unzip tools.
 
 %package utils
 Summary: Utilities for the zziplib library
-Group: Applications/Archiving
 Requires: %{name}%{?_isa} = %{version}-%{release}
 
 %description utils
@@ -49,7 +47,6 @@ This packages contains all the utilities that come with the zziplib library.
 
 %package devel
 Summary: Development files for the zziplib library
-Group: Development/Libraries
 Requires: %{name}%{?_isa} = %{version}-%{release}
 Requires: pkgconfig
 Requires: zlib-devel