feature: Implement artifacts deletion

Closes #744

docs/gl_objects/builds.rst

@@ -305,6 +305,10 @@ Mark a job artifact as kept when expiration is set::
 
     build_or_job.keep_artifacts()
 
+Delete the artifacts of a job::
+
+    build_or_job.delete_artifacts()
+
 Get a job trace::
 
     build_or_job.trace()

gitlab/v4/objects.py

@@ -1584,6 +1584,21 @@ def keep_artifacts(self, **kwargs):
         path = "%s/%s/artifacts/keep" % (self.manager.path, self.get_id())
         self.manager.gitlab.http_post(path)
 
+    @cli.register_custom_action("ProjectJob")
+    @exc.on_http_error(exc.GitlabCreateError)
+    def delete_artifacts(self, **kwargs):
+        """Delete artifacts of a job?
+
+        Args:
+            **kwargs: Extra options to send to the server (e.g. sudo)
+
+        Raises:
+            GitlabAuthenticationError: If authentication is not correct
+            GitlabDeleteError: If the request could not be performed
+        """
+        path = "%s/%s/artifacts" % (self.manager.path, self.get_id())
+        self.manager.gitlab.http_delete(path)
+
     @cli.register_custom_action("ProjectJob")
     @exc.on_http_error(exc.GitlabGetError)
     def artifacts(self, streamed=False, action=None, chunk_size=1024, **kwargs):