Remove unnecessary badges.

Author: drvinceknight

README.rst

@@ -1,15 +1,12 @@
-.. image:: https://coveralls.io/repos/github/Axelrod-Python/Axelrod/badge.svg?branch=master
-    :target: https://coveralls.io/github/Axelrod-Python/Axelrod?branch=master
-
 .. image:: https://img.shields.io/pypi/v/Axelrod.svg
     :target: https://pypi.python.org/pypi/Axelrod
 
-.. image:: https://travis-ci.org/Axelrod-Python/Axelrod.svg?branch=packaging
-    :target: https://travis-ci.org/Axelrod-Python/Axelrod
-
 .. image:: https://zenodo.org/badge/19509/Axelrod-Python/Axelrod.svg
     :target: https://zenodo.org/badge/latestdoi/19509/Axelrod-Python/Axelrod
 
+.. image:: https://github.com/Axelrod-Python/Axelrod/workflows/CI/badge.svg
+    :target: https://github.com/Axelrod-Python/Axelrod/actions
+
 |Join the chat at https://gitter.im/Axelrod-Python/Axelrod|
 
 Axelrod