fixup! Bob for Tim's latest apple and bite it off

Author: workingjubilee

src/ci/scripts/select-xcode.sh

@@ -16,6 +16,8 @@ if isMacOS; then
         echo "Using xcode 16? Please fix xcode-select.sh"
         exit 1
     fi
-    sudo rm -rf "${old_xcode}/../../"
+    old_xcode="${old_xcode%/*}" # pop a dir
+    old_xcode="${old_xcode%/*}" # twice
+    sudo rm -rf "${old_xcode}"
     sudo xcode-select -s "${SELECT_XCODE}"
 fi