Revert of Allow git cl also in repos with read-only git-svn.

Revert of Allow git cl also in repos with read-only git-svn. (https://codereview.chromium.org/344013005/)

Reason for revert:
Breaks WebRTC (and possibly other projects actually using https:// for svn access).

Original issue's description:
> Allow git cl also in repos with read-only git-svn.
> 
> If you have read-only git-svn git cl would still try
> to use svn commands, which would then fail. This
> changes git cl to only use git-svn if the remote
> svn repository use the svn:// protocol. It matches
> how chromium works and it allowed me to upload a patch.
> 
> BUG=391430
> 
> R=iannucci
> 
> Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=281500

TBR=iannucci@chromium.org
NOTREECHECKS=true
NOTRY=true
BUG=391430
Committed: http://src.chromium.org/viewvc/chrome?view=rev&revision=281513

[Daniel Bratell, 2014-07-07 09:18:19]

Created Revert of Allow git cl also in repos with read-only git-svn.

[commit-bot: I haz the power, 2014-07-07 09:19:13]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/bratell@opera.com/375553002/1

[commit-bot: I haz the power, 2014-07-07 09:19:13]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-07-07 09:19:14]

No LGTM from a valid reviewer yet. Only full committers are accepted.
Even if an LGTM may have been provided, it was from a non-committer or
a provisional committer, _not_ a full super star committer.
See http://www.chromium.org/getting-involved/become-a-committer
Note that this has nothing to do with OWNERS files.

[Torne, 2014-07-07 09:25:10]

lgtm

[Daniel Bratell, 2014-07-07 09:27:06]

The CQ bit was checked by bratell@opera.com

[commit-bot: I haz the power, 2014-07-07 09:28:14]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/bratell@opera.com/375553002/1

[commit-bot: I haz the power, 2014-07-07 09:30:26]

Change committed as 281513