(maint) Removing unneeded patch from %install in RPM spec

Fix RPM Build Failure

As of commit a05d613751335fd16a222bf2e2300e7ccf41dc8a RPM builds are failing because of an error during the application of patch ext/redhat/rundir-perms.patch in the %install sections of the RPM spec.  The patch changes the rundir permissions from 01777 to 0755 for Redhat.  0755 seems like the appropriate choice for all operating systems, and since this is now fixed in the lib/puppet/defaults.rb, the patch is no longer needed.