CI: drop codecov annot.

.codecov.yml

@@ -20,7 +20,6 @@ coverage:
  # https://codecov.readme.io/v1.0/docs/commit-status
  project:
  default:
- against: auto
  target: 95% # specify the target coverage for each commit status
  threshold: 30% # allow this little decrease on project
  # https://github.com/codecov/support/wiki/Filtering-Branches
@@ -29,10 +28,13 @@ coverage:
  # https://github.com/codecov/support/wiki/Patch-Status
  patch:
  default:
- against: auto
  threshold: 50% # allow this much decrease on patch
  changes: false
 
+# https://docs.codecov.com/docs/github-checks#disabling-github-checks-patch-annotations
+github_checks:
+ annotations: false
+
 parsers:
  gcov:
  branch_detection: