Remove Travis CI and AppVeyor badges

Author: hugovk

CONTRIBUTING.rst

@@ -17,14 +17,10 @@ What it takes to add a new reactor:
   * Add conditional ``deps`` for the new reactor such as ``foo: foobar`` to the appropriate test environments
   * Add ``fooreactor: pytest --reactor=foo`` to the commands list
 
-* In ``.travis.yml``
+* In ``.github/workflows/ci.yml``
 
   * Consider any extra system packages which may be required
 
-* In ``appveyor.yml``
-
-  * Add the new reactor environment to the ``TOXENV`` for each relevant Python
-  
 Reference reactor additions:
   * `asyncio`_
   * `qt5reactor`_

README.rst

@@ -4,7 +4,7 @@
 pytest-twisted - test twisted code with pytest
 ==============================================================================
 
-|PyPI| |Pythons| |Travis| |AppVeyor| |Actions| |Black|
+|PyPI| |Pythons| |Actions| |Black|
 
 :Authors: Ralf Schmitt, Kyle Altendorf, Victor Titor
 :Version: 1.14.3
@@ -233,14 +233,6 @@ v1.9
    :alt: Supported Python versions
    :target: https://pypi.python.org/pypi/pytest-twisted
 
-.. |Travis| image:: https://travis-ci.org/pytest-dev/pytest-twisted.svg?branch=master
-   :alt: Travis build status
-   :target: https://travis-ci.org/pytest-dev/pytest-twisted
-
-.. |AppVeyor| image:: https://ci.appveyor.com/api/projects/status/eb1vp9hysp463c66/branch/master?svg=true
-   :alt: AppVeyor build status
-   :target: https://ci.appveyor.com/project/pytestbot/pytest-twisted
-
 .. |Actions| image:: https://img.shields.io/github/workflow/status/pytest-dev/pytest-twisted/CI/master?logo=GitHub-Actions
    :alt: GitHub Actions build status
    :target: https://github.com/pytest-dev/pytest-twisted/actions?query=branch%3Amaster