packaging: Remove Module.resourcePath

The resourcePath member in Module is never initialized, and in fact,
there is no way to initialize it - i.e., it is always null.

This patch removes it and all references to it.

Change-Id: I1ca9f1a35ffc461311e61e649fdf1a1375ffd0a7
Signed-off-by: Allon Mureinik <amureini@redhat.com>