Remove obsolete Group tag

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

speexdsp.spec

@@ -4,7 +4,6 @@ Version:        1.2
 Release:        0.14.%{rc_ver}%{?dist}
 Summary:        A voice compression format (DSP)
 
-Group:          System Environment/Libraries
 License:        BSD
 URL:            http://www.speex.org/
 Source0:        http://downloads.xiph.org/releases/speex/%{name}-%{version}%{rc_ver}.tar.gz
@@ -29,7 +28,6 @@ This is the DSP package, see the speex package for the codec part.
 
 %package devel
 Summary: 	Development package for %{name}
-Group: 		Development/Libraries
 Requires: 	%{name}%{?_isa} = %{version}-%{release}
 # speexdsp was split from speex in 1.2rc2. As speexdsp does not depend on
 # speex, a versioned conflict is required.