This reverts commit e2c3bbabb0. This was superseded by #29871 which adds more crypto features with a dedicated interface. Since this commit was never in a stable release (merged during 3.2 dev), we revert it to avoid having to deprecate it in favor of the Crypto API. See https://github.com/godotengine/godot/pull/31187#issuecomment-523377965
e2c3bbabb0