package.bbclass: don't exclude package groups from runtime mapping

package.bbclass: don't exclude package groups from runtime mapping

This ensures that remapping happens correctly, particularly
when package groups list noarch packages, and multilib is in use. Previously
this was masked by rpm doing *another* layer of remapping on top of this.

Signed-off-by: Alexander Kanavin <alexander.kanavin@linux.intel.com>