Fixed MacOS Github Action

Author: foldynl

.github/workflows/c-cpp.yml

@@ -83,7 +83,6 @@ jobs:
          echo "TAGVERSION=${TAGVERSION:1}" >> $GITHUB_ENV
      - name: Configure and compile
        run: |
-         mkdir build
          cd build
          qmake6 -config release ..
          make -j4