Make use of the new git_remote_fetch signature to clean up some code.
Make use of the new git_remote_fetch signature to clean up some code.

libgit2/rugged,tpickett66/rugged,Acidburn0zzz/rugged,Acidburn0zzz/rugged,Acidburn0zzz/rugged,libgit2/rugged,saraid/rugged,libgit2/rugged,tpickett66/rugged,tpickett66/rugged,saraid/rugged,saraid/rugged