Merge branch 'cn/deprecate-ssh-git-url'

The two alternative ways to spell "ssh://" transport have been
deprecated for a long time.  The last mention of them has finally
removed from the documentation.

* cn/deprecate-ssh-git-url:
  Disown ssh+git and git+ssh

Documentation/git.txt

@@ -1129,7 +1129,7 @@ of clones and fetches.
 	    connection (or proxy, if configured)
 
 	  - `ssh`: git over ssh (including `host:path` syntax,
-	    `git+ssh://`, etc).
+	    `ssh://`, etc).
 
 	  - `http`: git over http, both "smart http" and "dumb http".
 	    Note that this does _not_ include `https`; if you want both,