[AIRFLOW-6365] Remove tests/compat

[turbaszek]

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Jira

• My PR addresses the following Airflow Jira issues and references them in the PR title. For example, "[AIRFLOW-XXX] My Airflow PR"
  • https://issues.apache.org/jira/browse/AIRFLOW-6365

Description

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It seems we no longer need compat module to preserve compatibility with mock.

Tests

• My PR adds the following unit tests OR does not need testing for this extremely good reason:

Commits

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  1. Subject is separated from body by a blank line
  2. Subject is limited to 50 characters (not including Jira issue reference)
  3. Subject does not end with a period
  4. Subject uses the imperative mood ("add", not "adding")
  5. Body wraps at 72 characters
  6. Body explains "what" and "why", not "how"

Documentation

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  • All the public functions and the classes in the PR contain docstrings that explain what it does
  • If you implement backwards incompatible changes, please leave a note in the Updating.md so we can assign it to a appropriate release

[codecov-io]

Codecov Report

Merging #6919 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #6919   +/-   ##
=======================================
  Coverage   84.72%   84.72%           
=======================================
  Files         679      679           
  Lines       38505    38505           
=======================================
  Hits        32623    32623           
  Misses       5882     5882

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