[PATCH remotenames V3] remotenames: remove support for old remotenames file format

[Sean Farley]

Sean Farley <sean at farley.io> writes:

> Jun Wu <quark at fb.com> writes:
>
>> I love this 100ms speed-up. If we want to support the old format, I think it
>> is doable by making "branches" lazy and testing "if rname in bookmarks"
>> first. Alternatively, we may want to find a way to disable "branches"
>> more completely.
>>
>> I prefer dropping support. Will let smf decide.
>
> I'm fine with dropping support (this is a very experimental extension).
> I'm still processing the journal patch so I'm behind on reviewing this
> one.

This is now pushed. Thanks!