Remove obsolete Group tag

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

libksba.spec

@@ -6,7 +6,6 @@ Release: 8%{?dist}
 # The library is licensed under LGPLv3+ or GPLv2+,
 # the rest of the package under GPLv3+
 License: (LGPLv3+ or GPLv2+) and GPLv3+
-Group:   System Environment/Libraries
 URL:     http://www.gnupg.org/
 Source0: ftp://ftp.gnupg.org/gcrypt/libksba/libksba-%{version}.tar.bz2
 Source1: ftp://ftp.gnupg.org/gcrypt/libksba/libksba-%{version}.tar.bz2.sig
@@ -25,7 +24,6 @@ specifications are building blocks of S/MIME and TLS.
 
 %package devel
 Summary: Development headers and libraries for %{name}
-Group:   Development/Libraries
 Requires: %{name}%{?_isa} = %{version}-%{release}
 %description devel
 %{summary}.