Remove stale setup-python step

Author: t3chguy

.github/workflows/build_desktop_macos.yaml

@@ -104,11 +104,6 @@ jobs:
                   rustup target add aarch64-apple-darwin
                   rustup target add x86_64-apple-darwin
 
-            # M1 macos-14 comes without Python preinstalled
-            - uses: actions/setup-python@a309ff8b426b58ec0e2a45f0f869d46889d02405 # v6
-              with:
-                  python-version: "3.13"
-
             # Install Quartz for DMG badges
             # https://github.com/electron-userland/electron-builder/issues/9511#issuecomment-3774092888
             - run: sudo pip3 install pyobjc-framework-Quartz