SPEC file cleanup

* Removed the hard coded snap tag, if needed it should be passed in
  via "rpmbuild --define 'snap ...'".
* Changed the hard coded version to "@VERSION@" to make it clear
  that the copy of the spec file in the repository needs to be
  updated manually.

(cherry picked from commit 70c2351d54135bad5fa671c39f01ea8955490daa)
More RPM spec file cleanup

* Removed obsolete patches from openSUSE packages

(cherry picked from commit 7b1c84dcca8d76bedba5fd73eb6a319f48429ecb)