Refine Kyria keymap layout: remove Numpad and Nav layer key assignments for improved clarity and consistency.

Author: Will Griffiths

keyboards/splitkb/kyria/rev1/base/keymaps/willgriffiths/keymap.c

@@ -88,7 +88,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |        |      |      | VolDn| Mute |       |      |      |  |      |      | 0 )   | 1 !  | 2 @  | 3 #  | = +  |        |
  * `----------------------+------+------+-------+------+------|  |------+------+-------+------+------+----------------------'
  *                        |      |      |       |      |      |  |      |      |       |      |      |
- *                        |      |      | Numpad|      |      |  |      | Nav  | Adjust|      |      |
+ *                        |      |      |       |      |      |  |      |      | Adjust|      |      |
  *                        `----------------------------------'  `----------------------------------'
  */
     [_NUMPAD] = LAYOUT(
@@ -108,7 +108,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |        |  %   |  ^   |  [   |  ]   |  ~    |      |      |  |      |      |   &   |  =   |  ,   |  .   |  / ? | - _    |
  * `----------------------+------+------+-------+------+------|  |------+------+-------+------+------+------+------+--------'
  *                        |      |      |       |      |      |  |      |      |       |      |      |
- *                        |      |      | Numpad|      |      |  |      | Nav  | Symbol|      |      |
+ *                        |      |      | Adjust|      |      |  |      |      |       |      |      |
  *                        `-----------------------------------'  `-----------------------------------'
  */
     [_SYM] = LAYOUT(
@@ -128,7 +128,7 @@ const uint16_t PROGMEM keymaps[][MATRIX_ROWS][MATRIX_COLS] = {
  * |        |      |      |      |      |       |      |      |  |      |      |       |      |      |      |      |        |
  * `----------------------+------+------+-------+------+------|  |------+------+-------+------+------+----------------------'
  *                        |      |      |       |      |      |  |      |      |       |      |      |
- *                        |      |      | Numpad|      |      |  |      | Nav  | Symbol|      |      |
+ *                        |      |      |       |      |      |  |      |      |       |      |      |
  *                        `-----------------------------------'  `-----------------------------------'
  */
     [_NAV] = LAYOUT(