Don't set group tags

They are unused in Fedora.

glib-networking.spec

@@ -5,7 +5,6 @@ Version:        2.50.0
 Release:        1%{?dist}
 Summary:        Networking support for GLib
 
-Group:          Development/Libraries
 License:        LGPLv2+
 URL:            http://www.gnome.org
 Source0:        http://download.gnome.org/sources/glib-networking/2.50/%{name}-%{version}.tar.xz
@@ -33,7 +32,6 @@ implementation.
 
 %package tests
 Summary: Tests for the glib-networking package
-Group: Development/Libraries
 Requires: %{name}%{?_isa} = %{version}-%{release}
 
 %description tests
@@ -72,6 +70,7 @@ rm -f $RPM_BUILD_ROOT%{_libdir}/gio/modules/*.la
 %changelog
 * Mon Sep 19 2016 Kalev Lember <klember@redhat.com> - 2.50.0-1
 - Update to 2.50.0
+- Don't set group tags
 
 * Thu Aug 18 2016 Kalev Lember <klember@redhat.com> - 2.49.90-1
 - Update to 2.49.90