TST: xfail gbq & feather tests for now as version incompat

[jreback]

need to revert these when fixed
https://travis-ci.org/pandas-dev/pandas/builds/444265455

[jreback]

cc @tswast is this a newer pandas-gbq?

[tswast]

Sorry about that. I removed these methods in googleapis/python-bigquery-pandas#216 (I thought they were unused.) Since listing datasets while you are deleting them is flakey, I updated the pandas-gbq tests in that PR to use a fixture to create a random dataset and delete it when the test finishes.

[jreback]

ok that's fine. can you PR to pandas to fix this up?

[pep8speaks]

Hello @jreback! Thanks for submitting the PR.

• There are no PEP8 issues in the file pandas/tests/io/test_feather.py !

• There are no PEP8 issues in the file pandas/tests/io/test_gbq.py !

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@@            Coverage Diff            @@
##             master   #23281   +/-   ##
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  Coverage          ?   92.19%           
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  Files             ?      169           
  Lines             ?    50970           
  Branches          ?        0           
=========================================
  Hits              ?    46991           
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  Partials          ?        0

Flag	Coverage Δ
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#single	42.25% <ø> (?)

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[tswast]

PR for gbq tests: #23303