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, 6 deletions

diff --git a/quantum/quantum.h b/quantum/quantum.h
index d1f761f17..7cf16d81e 100644
--- a/quantum/quantum.h
+++ b/quantum/quantum.h
@@ -89,15 +89,10 @@ extern uint32_t default_layer_state;
     #include "process_music.h"
 #endif
 
-#ifndef DISABLE_LEADER
+#ifdef LEADER_ENABLE
     #include "process_leader.h"
 #endif
 
-#define DISABLE_CHORDING
-#ifndef DISABLE_CHORDING
-    #include "process_chording.h"
-#endif
-
 #ifdef UNICODE_ENABLE
     #include "process_unicode.h"
 #endif