Revert "Update meson scripts to use python"

Revert submission 3044612-keycodemap-from-tree

Reason for revert: Broken downstream, reverting temporarily

Reverted changes: /q/submissionid:3044612-keycodemap-from-tree

Change-Id: I9d6fcb85a4e3a20edc858867d9c84a37c15d1f7e
2 files changed