Consistently use `phutil_console_confirm()`.

Authored by stefren on Jul 6 2017, 2:09 AM.


Consistently use phutil_console_confirm().

PhutilConsole->confirm() is vestigial as noted in efcd70c, as
PhutilConsole may be deprecated sometime in the future. PhutilConsole
was developed as a tool for T4281 but the feature has been removed

Replace existing occurences of the PhutilConsole->confirm() pattern with
phutil_console_confirm(). There should be no change in functionality
since the two functions are interchangeable.

Test Plan: Manually tested by running bin/arc lint, bin/arc diff --preview, bin/arc land --preview.

Reviewers: Blessed Reviewers, epriestley

Reviewed By: Blessed Reviewers, epriestley

Subscribers: epriestley, alexmv

Differential Revision: