Drop kcov/codecov for now, use upstream bats

.drone.yml

@@ -14,24 +14,10 @@ steps:
       - flake8 --max-line-length 100 bin/app-json.py
 
   - name: run unit tests
-    image: decentral1se/docker-dind-bats-kcov
+    image: bats/bats
     commands:
       - bats tests
 
-  - name: collect code coverage
-    failure: ignore # until we fix this
-    image: decentral1se/docker-dind-bats-kcov
-    commands:
-      - kcov . bats tests || true
-
-  - name: send code coverage report to codecov
-    failure: ignore # until we fix this
-    image: plugins/codecov
-    settings:
-      token:
-        from_secret: codecov_token
-        required: true
-
   - name: notify rocket chat
     image: plugins/slack
     settings:
@@ -43,7 +29,6 @@ steps:
     when:
       status:
         - failure
-
 trigger:
   branch:
     - main