Misc cleanups, test parametrization

[jbrockmendel]

No coherent theme: remove an unused variable in inference.pyx, make some imports more direct, parametrize a big test, and move a tslib-specific test to test_tslibs

[pep8speaks]

Hello @jbrockmendel! Thanks for updating the PR.

Cheers ! There are no PEP8 issues in this Pull Request. 🍻

Comment last updated on July 01, 2018 at 02:49 Hours UTC

[codecov]

Codecov Report

Merging #21690 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #21690   +/-   ##
=======================================
  Coverage    91.9%    91.9%           
=======================================
  Files         154      154           
  Lines       49657    49657           
=======================================
  Hits        45638    45638           
  Misses       4019     4019

Flag	Coverage Δ
#multiple	90.28% <ø> (ø)	⬆️
#single	41.9% <ø> (ø)	⬆️

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[jreback]

thanks!