spec: Drop polkit-devel from BuildRequires

As of 2499d1a0 we don't link against libpolkit anymore, so
we only need the polkit package to be available during build.
Signed-off-by: NAndrea Bolognani <abologna@redhat.com>
Reviewed-by: NDaniel P. Berrangé <berrange@redhat.com>

libvirt.spec.in

@@ -358,11 +358,9 @@ BuildRequires: ebtables
 BuildRequires: module-init-tools
 BuildRequires: cyrus-sasl-devel
 %if 0%{?fedora} || 0%{?rhel} >= 7
-# F22 polkit-devel doesn't pull in polkit anymore, which we need for pkcheck
 BuildRequires: polkit >= 0.112
-BuildRequires: polkit-devel >= 0.112
 %else
-BuildRequires: polkit-devel >= 0.93
+BuildRequires: polkit >= 0.93
 %endif
 # For mount/umount in FS driver
 BuildRequires: util-linux