removing BountySource from readme

Author: RichieCahill

README.rst

@@ -22,15 +22,10 @@ Jira Python Library
 .. image:: https://codecov.io/gh/pycontribs/jira/branch/main/graph/badge.svg
     :target: https://codecov.io/gh/pycontribs/jira
 
-.. image:: https://img.shields.io/bountysource/team/pycontribs/activity.svg
-    :target: https://www.bountysource.com/teams/pycontribs/issues?tracker_ids=3650997
-
 
 This library eases the use of the Jira REST API from Python and it has been used in production for years.
 
-As this is an open-source project that is community maintained, do not be surprised if some bugs or features are not implemented quickly enough. You are always welcomed to use BountySource_ to motivate others to help.
-
-.. _BountySource: https://www.bountysource.com/teams/pycontribs/issues?tracker_ids=3650997
+As this is an open-source project that is community maintained, do not be surprised if some bugs or features are not implemented quickly enough.
 
 
 Quickstart