Add agile remove method

Author: Gonchik Tsymzhitov

CONTRIBUTING.rst

@@ -62,4 +62,6 @@ All methods based on docs from: https://developer.atlassian.com/docs/
     - https://docs.atlassian.com/atlassian-bamboo/REST/latest/
 7. Tempo:
     - https://www.tempo.io/server-api-documentation
-    - http://tempo.io/doc/core/api/rest/latest/
+    - http://tempo.io/doc/core/api/rest/latest/
+8. Marketplace:
+    - https://developer.atlassian.com/platform/marketplace/rest

atlassian/VERSION

@@ -1 +1 @@
-1.12.2
+1.12.3

atlassian/jira.py

@@ -1006,6 +1006,15 @@ def get_all_agile_boards(self, board_name=None, project_key=None, board_type=Non
 
         return self.get(url, params=params)
 
+    def delete_agile_board(self, board_id):
+        """
+        Delete agile board by id
+        :param board_id:
+        :return:
+        """
+        url = 'rest/agile/1.0/board/{}'.format(str(board_id))
+        return self.delete(url)
+
     def health_check(self):
         """
         Get health status