chore(ci): remove PR coverage comments

Coverage reports are still generated and uploaded as artifacts,
but no longer posted as PR comments.

Fixes #67

Author: CalvinAllen

.github/workflows/build.yml

@@ -8,7 +8,6 @@ on:
 
 permissions:
   contents: read
-  pull-requests: write  # Required for PR comments
   checks: write         # Required for golangci-lint annotations
 
 jobs:
@@ -235,13 +234,6 @@ jobs:
           coverage-summary.md
         retention-days: 30
 
-    - name: Comment coverage on PR
-      if: github.event_name == 'pull_request'
-      uses: marocchino/sticky-pull-request-comment@v2
-      with:
-        header: coverage-report-${{ matrix.os }}-${{ matrix.platform }}
-        path: coverage-summary.md
-
     - name: Upload build artifacts
       uses: actions/upload-artifact@v4
       with: