[CI] Skip python installation on macOS (#23892)

Author: sbc100

.circleci/config.yml

@@ -332,7 +332,7 @@ commands:
             HOMEBREW_NO_AUTO_UPDATE: "1"
           command: |
             brew update
-            brew install cmake ninja python3 pkg-config
+            brew install cmake ninja pkg-config
       - checkout
       - run:
           name: submodule update