Update git-svn manpage to remove the implication that SVN::* is optional.
Update git-svn manpage to remove the implication that SVN::* is optional.

Now that git-svn requires the SVN::* Perl library, the manpage doesn't need
to describe what happens when you don't have it.

Signed-off-by: Steven Grimm <bb1a4c5485e38dce6d5ee11bacded22d2e87f38e@midwinter.com>
Acked-by: Eric Wong <8c2951295f8292b0c03727bc4652981172298eae@yhbt.net>
Signed-off-by: Junio C Hamano <dc50d1021234060e53ec42a77d526afa2fe07479@cox.net>

destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git,destenson/git