Delete simulation files after unit testing

[amarkpayne]

Motivation or Problem

Whenever the unit test are run, the simulation logs in rmgpy.tools.simulateTest.py are created but never deleted (whereas everything else with this test is deleted).

Description of Changes

Add statements in rmgpy.tools.simulateTest.py to remove the log files after the tests have run.

Testing

Ran the unit tests and everything passed and the logs were deleted

[amarkpayne]

This should pass all of the tests as soon as #1644 is merged

[codecov]

Codecov Report

Merging #1645 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1645   +/-   ##
=======================================
  Coverage   41.82%   41.82%           
=======================================
  Files         177      177           
  Lines       29455    29455           
  Branches     6059     6059           
=======================================
  Hits        12319    12319           
  Misses      16267    16267           
  Partials      869      869

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[yunsiechung]

Everything looks good.
It does successfully remove the log and backup log files after unit tests.

[mliu49]

Thanks for catching this. The simulate logs were newly added in #1593.