[ci] Remove homebrew pkgconf workaround

See: HaxeFoundation/haxe#11847
#294

Author: tobil4sk

.github/workflows/main.yml

@@ -67,8 +67,6 @@ jobs:
         run: |
           set -ex
           brew update
-          brew uninstall --force pkg-config
-          brew install pkgconf --overwrite
           brew bundle --file="${{ matrix.BREWFILE }}"
 
       - name: CMake