🔨 Disable OpenMP availability check

* This step **will** fail on MacOS, as the compiler is not linked to OpenMP in R by default (I think) - this is something that happens during build, and therefore it will fail. However, this is a wild guess as it is my understanding that plugins will link it during build of single programs.

Author: serkor1

.github/workflows/R-CMD-check.yaml

@@ -96,30 +96,6 @@ jobs:
         run: |
           pkgbuild::check_build_tools(debug = TRUE)
 
-      - name: Check OpenMP availability
-        if: matrix.config.compiler != 'clang'
-        shell: Rscript {0}
-        run: |
-          # 1) check if OpenMP
-          # is available
-          Rcpp::cppFunction(plugins = "openmp",
-            code = "
-            bool is_available() {
-              #ifdef _OPENMP
-                return true;
-              #else
-                return false;
-              #endif
-            }
-            "
-          )
-
-          # 2) stop if not
-          # available
-          stopifnot(
-            "OpenMP not available!" = is_available()
-          )
-
       - name: Setup Python and {reticulate}
         uses: ./.github/actions/setup-reticulate