Update build.yml

Author: patrickbr

.github/workflows/build.yml

@@ -199,18 +199,3 @@ jobs:
         run: cd build && make
       - name: tests
         run: cd build && ctest --output-on-failure
-  macos-11-build:
-    runs-on: macos-11
-    steps:
-      - name: Checkout repository code
-        uses: actions/checkout@v2
-      - name: Checkout submodules
-        run: git submodule update --init --recursive
-      - name: install dependencies
-        run: brew install --force --overwrite cmake && brew install --force --overwrite glpk 
-      - name: cmake
-        run: mkdir build && cd build && cmake ..
-      - name: make
-        run: cd build && make
-      - name: tests
-        run: cd build && ctest --output-on-failure