Revert "gpui: Take advantage of unified memory on Apple silicon (#44273)" (#45022)

This reverts commit 2441dc3f6637431a781ae10b2e1aa8c4704b9502.

Release Notes:

- N/A
abcf5a1273Joseph T. Lyons committed on 12/16/2025, 7:41:59 PM· committed by GitHubparentd16619a
2 files changedLine totals unavailable