[PATCH 1 of 7 bm-refactor V2] bookmarks: factor out delete logic from commands

[Martin von Zweigbergk]

On Wed, Jun 21, 2017 at 9:49 PM, Martin von Zweigbergk
<martinvonz at google.com> wrote:
> On Wed, Jun 21, 2017 at 1:45 PM, Sean Farley <sean at farley.io> wrote:
>> # HG changeset patch
>> # User Sean Farley <sean at farley.io>
>> # Date 1497333768 25200
>> #      Mon Jun 12 23:02:48 2017 -0700
>> # Branch bm-refactor
>> # Node ID afad435bfa048b562cd4e302f01d0456e7ad33c5
>> # Parent  41b081ac2145d88ba1fe494630ce69652f016078
>> bookmarks: factor out delete logic from commands
>>
>> While we're here, let's use fancy context managers. I believe this
>> should still work since our locks are re-entrant.
>
> Dropping the last sentence in flight.

Oh, and the first sentence too :-)

Will do that for all applicable patches.