Revert "CI-unixish.yml: fixed missing nproc on macos-*"

This reverts commit 1808fa9.

Author: firewave

.github/workflows/CI-unixish.yml

@@ -45,12 +45,6 @@ jobs:
         sudo apt-get update
         sudo apt-get install libc++-18-dev
 
-      # coreutils contains "nproc"
-    - name: Install missing software on macos
-      if: contains(matrix.os, 'macos')
-      run: |
-        brew install coreutils
-
     - name: Install missing software on macos
       if: contains(matrix.os, 'macos')
       run: |