Remove obsolete Group tag

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

jemalloc.spec

@@ -4,7 +4,6 @@ Version:        5.1.0
 Release:        3%{?dist}
 Summary:        General-purpose scalable concurrent malloc implementation
 
-Group:          System Environment/Libraries
 License:        BSD
 URL:            http://www.canonware.com/jemalloc/
 Source0:        https://github.com/jemalloc/%{name}/releases/download/%{version}/%{name}-%{version}.tar.bz2
@@ -23,7 +22,6 @@ This distribution is the stand-alone "portable" implementation of %{name}.
 %package devel
 Summary:        Development files for %{name}
 Requires:       %{name} = %{version}-%{release}
-Group:          Development/Libraries
 
 %description devel
 The %{name}-devel package contains libraries and header files for