Fix import format at pandas/tests/io/parser directory

[mwoss]

• partial Fix import formatting using isort #23334
• passes git diff upstream/master -u -- "*.py" | flake8 --diff

Ran isort --recursive pandas/tests/io/parser and then checked imports using isort --recursive --check-only pandas/tests/io/parser

This PR also exceeded 20 file limit (22 files with setup.cfg), but I think it's acceptable and unnecessary to divide it to two separate PRs.

[pep8speaks]

Hello @mwoss! Thanks for submitting the PR.

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

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

[mwoss]

Tests failed due to:

The job exceeded the maximum time limit for jobs, and has been terminated.

Should I commit something to trigger build again?

[WillAyd]

Restarted the Travis job. Didn't see an option in Azure - @TomAugspurger can you help here? Am I overlooking in the UI or do I need to get something squared away with access? Was assuming I'd be able to do it as follows:

[codecov]

Codecov Report

Merging #23367 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master   #23367   +/-   ##
=======================================
  Coverage   92.22%   92.22%           
=======================================
  Files         169      169           
  Lines       51261    51261           
=======================================
  Hits        47277    47277           
  Misses       3984     3984

Flag	Coverage Δ
#multiple	90.66% <ø> (ø)	⬆️
#single	42.23% <ø> (ø)	⬆️

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[jreback]

thanks @mwoss