Remove obsolete Group tag

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

gstreamer1-rtsp-server.spec

@@ -5,7 +5,6 @@ Version:        1.15.1
 Release:        1%{?dist}
 Summary:        GStreamer RTSP server library
 
-Group:          Applications/Multimedia
 License:        LGPLv2+
 URL:            http://gstreamer.freedesktop.org/
 Source0:        http://gstreamer.freedesktop.org/src/gst-rtsp/gst-rtsp-server-%{version}.tar.xz
@@ -28,7 +27,6 @@ A GStreamer-based RTSP server library.
 
 %package devel
 Summary:        Development files for %{name}
-Group:          Development/Libraries
 License:        LGPLv2+
 Requires:       gstreamer1-devel%{?_isa} >= %{version}
 Requires:       gstreamer1-plugins-base-devel%{?_isa} >= %{version}