Fix library_map for D1198

Summary:
after a class is deleted/added, we need to run
arcanist/scripts/phutil_mapper src to update the library map.

Task ID: #

Test Plan:
run test case testEverythingImplemented and it passes.

Revert Plan:

Tags:

Reviewers: btrahan, epriestley

Reviewed By: btrahan

CC: aran, btrahan

Differential Revision: 1211