Update build.yml

.github/workflows/build.yml

@@ -75,21 +75,12 @@ jobs:
         sudo apt install llvm
     - name: make coverage
       run: |
-        CXX=clang++-10 make -j2 config=coverage coverage
-    - name: debug coverage
-      run: |
-        git status
-        git log -5
-        echo SHA: $GITHUB_SHA
+        CXX=clang++ make -j2 config=coverage coverage
     - name: upload coverage
       uses: coverallsapp/github-action@master
       with:
         path-to-lcov: ./coverage.info
         github-token: ${{ secrets.GITHUB_TOKEN }}
-    - uses: actions/upload-artifact@v2
-      with:
-        name: coverage
-        path: coverage
 
   web:
     runs-on: ubuntu-latest