Remove obsolete Group tag

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

liblqr-1.spec

@@ -2,7 +2,6 @@ Name:           liblqr-1
 Version:        0.4.2
 Release:        11%{?dist}
 Summary:        LiquidRescale library
-Group:          System Environment/Libraries
 License:        GPLv3
 URL:            http://liquidrescale.wikidot.com/
 Source0:        http://liblqr.wikidot.com/local--files/en:download-page/%{name}-%{version}.tar.bz2
@@ -16,7 +15,6 @@ technique.
 
 %package devel
 Summary:        LiquidRescale library  development kit
-Group:          Development/Libraries
 License:        GPLv3
 Requires:       %{name} = %{version}-%{release}
 Requires:       glib2-devel, pkgconfig