test: Remove unnecessary unlocks in cleanup paths
test: Remove unnecessary unlocks in cleanup paths

Commit id '865f479da' altered the logic to use a common test*ObjFindByName
helpers which would lock/unlock the test driver; however, a few cleanup paths
in that cleanup missed removing the Unlock, so remove it now.

Signed-off-by: John Ferlan <87558058f6f829e5ec976c8ef960720af4ff9c7d@redhat.com>

crobinso/libvirt,fabianfreyer/libvirt,crobinso/libvirt,nertpinx/libvirt,zippy2/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,datto/libvirt,andreabolognani/libvirt,nertpinx/libvirt,andreabolognani/libvirt,olafhering/libvirt,nertpinx/libvirt,andreabolognani/libvirt,libvirt/libvirt,olafhering/libvirt,VenkatDatta/libvirt,fabianfreyer/libvirt,fabianfreyer/libvirt,jardasgit/libvirt,VenkatDatta/libvirt,VenkatDatta/libvirt,jardasgit/libvirt,eskultety/libvirt,olafhering/libvirt,jfehlig/libvirt,nertpinx/libvirt,libvirt/libvirt,datto/libvirt,jardasgit/libvirt,eskultety/libvirt,andreabolognani/libvirt,crobinso/libvirt,zippy2/libvirt,datto/libvirt,eskultety/libvirt,jardasgit/libvirt,crobinso/libvirt,libvirt/libvirt,jardasgit/libvirt,eskultety/libvirt,datto/libvirt,libvirt/libvirt,jfehlig/libvirt,VenkatDatta/libvirt,eskultety/libvirt,datto/libvirt,jfehlig/libvirt,olafhering/libvirt,zippy2/libvirt,jfehlig/libvirt,andreabolognani/libvirt,zippy2/libvirt,nertpinx/libvirt,fabianfreyer/libvirt