Simplify testsuite driver

Authored by monoidal on Aug 11 2018, 2:04 PM.

Description

Simplify testsuite driver

Summary:

  • remove clean_cmd
  • framework_failures was undefined
  • times_file was not used
  • if_verbose_dump was called only when verbose >= 1; remove the check
  • simplify normalise_whitespace

Test Plan: validate

Reviewers: bgamari, thomie

Reviewed By: thomie

Subscribers: rwbarton, carter

Differential Revision: https://phabricator.haskell.org/D5061