config/hillside46.conf: add CONFIG_ZMK_POINTING flake.nix: update hash, remove CONFIG_ZMK_POINTING now that colemak-dh-ortho layout is set in the operating system/desktop environment for me, qwerty layer is the default, and colemak-dh layer is still there for other usecases Signed-off-by: unexplrd <unexplrd@linerds.us>