Remove obsolete Group tag

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

zvbi.spec

@@ -5,7 +5,6 @@ Name:               zvbi
 Version:            0.2.35
 Release:            6%{?dist}
 Summary:            Raw VBI, Teletext and Closed Caption decoding library
-Group:              System Environment/Libraries
 # See NEWS for a full breakdown of licensing.
 License:            LGPLv2+ and GPLv2+ and BSD
 URL:                http://zapping.sourceforge.net/ZVBI/index.html
@@ -39,7 +38,6 @@ other digital data can be sent during this time period.
 
 %package devel
 Summary:            Development files for zvbi
-Group:              Development/Libraries
 Requires:           %{name} = %{version}-%{release}
 Requires:           pkgconfig
 
@@ -49,7 +47,6 @@ Development files for zvbi
 
 %package fonts
 Summary:            Fonts from zvbi converted to X11
-Group:              User Interface/X
 Requires(post):     fontconfig
 Requires(postun):   fontconfig
 BuildArch:	    noarch