Disable maximizing webdriver browser window in tests

[hackdna]

Workaround for #2067

[codecov-io]

Codecov Report

Merging #2181 into develop will decrease coverage by <.01%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           develop    #2181      +/-   ##
===========================================
- Coverage    46.36%   46.36%   -0.01%     
===========================================
  Files          412      412              
  Lines        27972    27971       -1     
  Branches      1312     1312              
===========================================
- Hits         12970    12969       -1     
  Misses       15002    15002

Impacted Files	Coverage Δ
refinery/selenium_testing/utils.py	81.01% <ø> (-0.24%)	⬇️

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[mccalluc]

Sure: Scott has a vague memory that tests at some point required this, but probably just treat that as something to keep in mind for the future.