Remove compatibility badges. (#746)

Author: busunkim96

README.md

@@ -1,8 +1,6 @@
 # Google API Client
 
 [![PyPI version](https://badge.fury.io/py/google-api-python-client.svg)](https://badge.fury.io/py/google-api-python-client)
-[![Compat check PyPI](https://python-compatibility-tools.appspot.com/one_badge_image?package=google-api-python-client)](https://python-compatibility-tools.appspot.com/one_badge_target?package=google-api-python-client)
-[![Compat check github](https://python-compatibility-tools.appspot.com/one_badge_image?package=git%2Bgit%3A//github.com/googleapis/google-api-python-client.git)](https://python-compatibility-tools.appspot.com/one_badge_target?package=git%2Bgit%3A//github.com/googleapis/google-api-python-client.git)
 
 This is the Python client library for Google's discovery based APIs. To get started, please see the [docs folder](docs/README.md).