Remove obsolete Group tag

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

pacemaker.spec

@@ -138,7 +138,6 @@ Version:       %{pcmkversion}
 Release:       %{pcmk_release}%{?dist}
 License:       GPLv2+ and LGPLv2+
 Url:           http://www.clusterlabs.org
-Group:         System Environment/Daemons
 
 # Hint: use "spectool -s 0 pacemaker.spec" (rpmdevtools) to check the final URL
 Source0:       https://github.com/%{github_owner}/%{name}/archive/%{commit}/%{name}-%{shortcommit}.tar.gz
@@ -219,7 +218,6 @@ Available rpmbuild rebuild options:
 %package cli
 License:       GPLv2+ and LGPLv2+
 Summary:       Command line tools for controlling Pacemaker clusters
-Group:         System Environment/Daemons
 Requires:      %{name}-libs%{?_isa} = %{version}-%{release}
 %if 0%{?fedora} > 22 || 0%{?rhel} > 7
 Recommends:    pcmk-cluster-manager = %{version}-%{release}
@@ -240,7 +238,6 @@ be part of the cluster.
 %package libs
 License:       GPLv2+ and LGPLv2+
 Summary:       Core Pacemaker libraries
-Group:         System Environment/Daemons
 Requires(pre): shadow-utils
 Requires:      %{name}-schemas = %{version}-%{release}
 
@@ -254,7 +251,6 @@ nodes and those just running the CLI tools.
 %package cluster-libs
 License:       GPLv2+ and LGPLv2+
 Summary:       Cluster Libraries used by Pacemaker
-Group:         System Environment/Daemons
 Requires:      %{name}-libs%{?_isa} = %{version}-%{release}
 
 %description cluster-libs
@@ -267,7 +263,6 @@ libraries needed for nodes that will form part of the cluster nodes.
 %package remote
 License:       GPLv2+ and LGPLv2+
 Summary:       Pacemaker remote daemon for non-cluster nodes
-Group:         System Environment/Daemons
 Requires:      %{name}-libs%{?_isa} = %{version}-%{release}
 Requires:      %{name}-cli = %{version}-%{release}
 Requires:      resource-agents
@@ -287,7 +282,6 @@ nodes not running the full corosync/cluster stack.
 %package libs-devel
 License:       GPLv2+ and LGPLv2+
 Summary:       Pacemaker development package
-Group:         Development/Libraries
 Requires:      %{name}-libs%{?_isa} = %{version}-%{release}
 Requires:      %{name}-cluster-libs%{?_isa} = %{version}-%{release}
 Requires:      libtool-ltdl-devel%{?_isa} libuuid-devel%{?_isa}
@@ -306,7 +300,6 @@ for developing tools for Pacemaker.
 %package       cts
 License:       GPLv2+ and LGPLv2+
 Summary:       Test framework for cluster-related technologies like Pacemaker
-Group:         System Environment/Daemons
 Requires:      %{python_pkg} >= %{python_min}
 Requires:      %{name}-libs = %{version}-%{release}
 Requires:      procps-ng
@@ -321,7 +314,6 @@ Test framework for cluster-related technologies like Pacemaker
 %package       doc
 License:       CC-BY-SA
 Summary:       Documentation for Pacemaker
-Group:         Documentation
 BuildArch:     noarch
 
 %description   doc
@@ -344,7 +336,6 @@ manager.
 %package       nagios-plugins-metadata
 License:       GPLv3
 Summary:       Pacemaker Nagios Metadata
-Group:         System Environment/Daemons
 BuildArch:     noarch
 # NOTE below are the plugins this metadata uses.
 Requires:      nagios-plugins-http