Matthew Pickering authored Oct 26, 2016 and Ben Gamari committed Oct 26, 2016

The flag was:

1. Not documented.
2. Only used as a boolean flag.
3. Has overlapping functionality with -dno-debug-output
4. My poll of #ghc concluded that people didn't know it existed.

Reviewers: austin, bgamari

Reviewed By: bgamari

Subscribers: thomie

Differential Revision: https://phabricator.haskell.org/D2627

GHC Trac Issues: #12691