Remove pytest-profiling

Remove [pytest-profiling](https://pypi.org/project/pytest-profiling/),
as it does not support latest Python versions, was not updated for 5
years, and according to the comment in `aiosmtpd/docs/testing.rst` was
not very useful anyway.

Author: rominf

README.rst

@@ -179,7 +179,6 @@ have been configured and tested:
     (showing a single character per test run)
   - ``diffcov`` = with diff-coverage report (showing difference in
     coverage compared to previous commit). Tests will run in brief mode
-  - ``profile`` = no coverage testing, but code profiling instead.
     This must be **invoked manually** using the ``-e`` parameter
 
   **Note 1:** As of 2021-02-23,

aiosmtpd/docs/testing.rst

@@ -30,9 +30,6 @@ Other plugins that are used, to various degrees, in the ``aiosmtpd`` test suite
 * |pytest-cov|_ to integrate with |coverage-py|_
 * |pytest-sugar|_ to provide better ux
 * |pytest-print|_ to give some progress indicator and to assist test troubleshooting
-* |pytest-profiling|_ to implement ``*-profile`` testenv,
-  although to be honest this is not really useful as the profiling gets 'muddied' by
-  pytest runner.
 
 .. _`pytest-mock`: https://pypi.org/project/pytest-mock/
 .. |pytest-mock| replace:: ``pytest-mock``
@@ -44,8 +41,6 @@ Other plugins that are used, to various degrees, in the ``aiosmtpd`` test suite
 .. |pytest-sugar| replace:: ``pytest-sugar``
 .. _`pytest-print`: https://pypi.org/project/pytest-print/
 .. |pytest-print| replace:: ``pytest-print``
-.. _`pytest-profiling`: https://pypi.org/project/pytest-profiling/
-.. |pytest-profiling| replace:: ``pytest-profiling``
 
 
 Fixtures

tox.ini

@@ -25,7 +25,6 @@ deps =
     pytest >= 6.0  # Require >= 6.0 for pyproject.toml support (PEP 517)
     pytest-mock
     pytest-print
-    pytest-profiling
     pytest-sugar
     py # needed for pytest-sugar as it doesn't declare dependency on it.
     !nocov: coverage>=7.0.1