pylint fixes in configurable.

Removed unused variables, and changes
single line  pylint disable flags to
two line disabls flags that return the
line length below 80 chars.

BUG=chromium:272493
TEST=run_all_tests.py

Change-Id: Iabdb7cc2b0a0a35a1ea6e6715f39a452a6b0d292
Reviewed-on: https://chromium-review.googlesource.com/182850
Reviewed-by: Prathmesh Prabhu <pprabhu@chromium.org>
Tested-by: Byron Kubert <byronk@chromium.org>
Commit-Queue: Byron Kubert <byronk@chromium.org>
3 files changed