glance_store is a dependency of glance, has the actual
cinder integration code and ships a rootwrap.conf file,
as well as the required filters and glance-rootwrap
binary, so drop rootwrap.conf from glance.
This reverts commit 01fa437b94e95194ef451f50b0cb6eefc3030759.
Change-Id: I50cacdd7edeef204eef93c1d3338f420a3aa0216