Remove macos from workflow for now

.github/workflows/cmake-multi-platform.yaml

@@ -27,7 +27,7 @@ jobs:
       #
       # To add more build types (Release, Debug, RelWithDebInfo, etc.) customize the build_type list.
       matrix:
-        os: [ubuntu-latest, macos-latest]
+        os: [ubuntu-latest]
         c_compiler: [gcc, clang]
         f_compiler: [gfortran]
         # exclude: