Make `PREVENT_STUCK_MODIFIERS` the default (#3107)

* Remove chording as it is not documented, not used, and needs work.

* Make Leader Key an optional feature.

* Switch from `PREVENT_STUCK_MODIFIERS` to `STRICT_LAYER_RELEASE`

* Remove `#define PREVENT_STUCK_MODIFIERS` from keymaps.

1 files changed, 1 insertions, 5 deletions

diff --git a/quantum/quantum_keycodes.h b/quantum/quantum_keycodes.h
index 0ecc293a8..3b8795496 100644
--- a/quantum/quantum_keycodes.h
+++ b/quantum/quantum_keycodes.h
@@ -63,10 +63,6 @@ enum quantum_keycodes {
     QK_ONE_SHOT_LAYER_MAX = 0x54FF,
     QK_ONE_SHOT_MOD       = 0x5500,
     QK_ONE_SHOT_MOD_MAX   = 0x55FF,
-#ifndef DISABLE_CHORDING
-    QK_CHORDING           = 0x5600,
-    QK_CHORDING_MAX       = 0x56FF,
-#endif
     QK_TAP_DANCE          = 0x5700,
     QK_TAP_DANCE_MAX      = 0x57FF,
     QK_LAYER_TAP_TOGGLE   = 0x5800,
@@ -123,7 +119,7 @@ enum quantum_keycodes {
     GRAVE_ESC,
 
     // Leader key
-#ifndef DISABLE_LEADER
+#ifdef LEADER_ENABLE
     KC_LEAD,
 #endif