Update main.yml

Author: mcbarton

.github/workflows/main.yml

@@ -267,6 +267,7 @@ jobs:
         lcov --remove coverage.info  '${{ github.workspace }}/build/*' --ignore-errors unused --output-file coverage.info
         # output coverage data for debugging (optional)
         lcov --list coverage.info
+        rm -rf ./build/
 
     - name: Upload to codecov.io
       if: ${{ success() && (matrix.coverage == true) }}
@@ -298,3 +299,4 @@ jobs:
 
 
 
+