Remove unused pom dependencies
Remove unused pom dependencies

Previously declared to satisfy upper bounds warnings.  No longer
required, thanks to the plugin BOM.

v1v/git-plugin,martinda/git-plugin,MarkEWaite/git-plugin,martinda/git-plugin,jenkinsci/git-plugin,jenkinsci/git-plugin,jenkinsci/git-plugin,MarkEWaite/git-plugin,martinda/git-plugin,MarkEWaite/git-plugin,MarkEWaite/git-plugin,jenkinsci/git-plugin,v1v/git-plugin,v1v/git-plugin