Remove legacy keycodes, part 2 (#18660)

* `KC_SYSREQ` -> `KC_SYRQ`

And one `KC_ALT_ERASE` -> `KC_ERAS`

* `KC_NONUS_BSLASH` -> `KC_NUBS`

* `KC_NUMLOCK` -> `KC_NUM`

* `KC_CLCK` -> `KC_CAPS`

* `KC_SCROLLLOCK` -> `KC_SCRL`

* `KC_LBRACKET` -> `KC_LBRC`

* `KC_RBRACKET` -> `KC_RBRC`

* `KC_CAPSLOCK` -> `KC_CAPS`

keyboards/mechwild/mercutio/keymaps/fearless_spiff/keymap.c

@@ -76,7 +76,7 @@ static const encoder_key PROGMEM encoder_keys[] = {
     {"Teams", "Toggle", "Mic", KC_TEAMS_MUTE},
     {"Teams", "Toggle", "Cam", KC_TEAMS_CAM},
     {"Ctrl", "Alt", "Del", KC_CAD},
-    {"Caps", "Lock", "", KC_CAPSLOCK},
+    {"Caps", "Lock", "", KC_CAPS_LOCK},
     {"Pause", "", "", KC_PAUSE},
     {"PrtScr", "", "", KC_PSCR},
     {"Insert", "", "", KC_INS},