ci: drop codecov bot (#6917)

.github/codecov.yml

@@ -1,27 +0,0 @@
-coverage:
-  precision: 2
-  round: down
-  range: "70...100"
-  status:
-    project:
-      default:
-        threshold: 1%
-    patch: on
-    changes: off
-
-github_checks:
-  annotations: false
-
-comment:
-  layout: "diff, files"
-  behavior: default
-  require_changes: no
-  require_base: no
-  require_head: yes
-
-ignore:
-  - "docs"
-  - "DOCKER"
-  - "scripts"
-  - "**/*.pb.go"
-  - "libs/pubsub/query/query.peg.go"

.github/workflows/coverage.yml

@@ -121,7 +121,3 @@ jobs:
       - run: |
           cat ./*profile.out | grep -v "mode: atomic" >> coverage.txt
         if: env.GIT_DIFF
-      - uses: codecov/codecov-action@v2.0.3
-        with:
-          file: ./coverage.txt
-        if: env.GIT_DIFF