remove coveralls

Author: Covertness

.circleci/config.yml

@@ -2,9 +2,6 @@
 # See: https://circleci.com/docs/2.0/configuration-reference
 version: 2.1
 
-orbs: 
-  coveralls: coveralls/[email protected]
-
 # Define a job to be invoked later in a workflow.
 # See: https://circleci.com/docs/2.0/configuration-reference/#jobs
 jobs:
@@ -24,7 +21,6 @@ jobs:
       - run:
           name: Run doc
           command: "cargo doc"
-      - coveralls/upload
 
 
 # Invoke jobs via workflows