Remove rugged from Gemfile.lock
Remove rugged from Gemfile.lock

Previously, the Gemfile.lock still referenced rugged as a dependency
even though it had been removed.  This change removes it.

v2dev/V2GPTI,growthrepublic/git-pivotal-tracker-integration,v2dev/V2GPTI,nebhale/git-pivotal-tracker-integration,nebhale/git-pivotal-tracker-integration,growthrepublic/git-pivotal-tracker-integration