#MechKeys ACR60 Layout Updates

This PR removed and changed some of the layouts that were configured for the ACR60. If you use one of the following layouts, you will need to update your keymap:

• LAYOUT_hhkb
• LAYOUT_true_hhkb
• LAYOUT_directional
• LAYOUT_mitchsplit

#LAYOUT_hhkb :id=layout-hhkb

1. Change your layout macro to LAYOUT_60_hhkb.
2. Remove any keycodes for the key between Left Shift and QWERTY Z.

#LAYOUT_true_hhkb :id=layout-true-hhkb

1. Change your layout macro to LAYOUT_60_true_hhkb.
2. Remove any keycodes for the key between Left Shift and QWERTY Z.

#LAYOUT_directional :id=layout-directional

1. Change your layout macro to LAYOUT_60_ansi_arrow_split_bs.
2. Remove any keycodes for the key between Left Shift and QWERTY Z.
3. Remove any keycodes for the keys immediately before and after the 1.25u key of Split Spacebar.

If you need split spacebars, you may implement LAYOUT_60_ansi_arrow_split_space_split_bs and change your layout to it, removing the keycode between Left Shift and QWERTY Z.

#LAYOUT_mitchsplit :id=layout-mitchsplit

1. Use LAYOUT_60_ansi_split_space_split_rshift.