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.

7 files changed, 4 insertions, 20 deletions

diff --git a/keyboards/handwired/MS_sculpt_mobile/config.h b/keyboards/handwired/MS_sculpt_mobile/config.h
index f89514278..c3bdf333e 100644
--- a/keyboards/handwired/MS_sculpt_mobile/config.h
+++ b/keyboards/handwired/MS_sculpt_mobile/config.h
@@ -28,10 +28,10 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 #define DESCRIPTION     6000
 
 /* key matrix size */
-#define MATRIX_ROWS 8 
-#define MATRIX_COLS 18 
+#define MATRIX_ROWS 8
+#define MATRIX_COLS 18
 
-#ifdef ASTAR 
+#ifdef ASTAR
 #define PRODUCT         sculpt mobile astar
                         /*0   1   2   3    4   5  6   7   8 */
 #define MATRIX_ROW_PINS {D7, C6, D4, D0, D1, D3, D2, E2}
@@ -95,6 +95,4 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_MACRO
 //#define NO_ACTION_FUNCTION
 
-#define PREVENT_STUCK_MODIFIERS
-
 #endif
diff --git a/keyboards/handwired/atreus50/keymaps/ajp10304/config.h b/keyboards/handwired/atreus50/keymaps/ajp10304/config.h
index 6916d1a7d..f5e6bbabe 100644
--- a/keyboards/handwired/atreus50/keymaps/ajp10304/config.h
+++ b/keyboards/handwired/atreus50/keymaps/ajp10304/config.h
@@ -3,8 +3,6 @@
 
 #include "../../config.h"
 
-#define PREVENT_STUCK_MODIFIERS
-
 #undef MATRIX_ROW_PINS
 #undef MATRIX_COL_PINS
 
diff --git a/keyboards/handwired/dactyl/config.h b/keyboards/handwired/dactyl/config.h
index a990cc720..08931ecd3 100644
--- a/keyboards/handwired/dactyl/config.h
+++ b/keyboards/handwired/dactyl/config.h
@@ -63,8 +63,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 /* Set 0 if debouncing isn't needed */
 #define DEBOUNCE    15
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define USB_MAX_POWER_CONSUMPTION 500
 
 #endif
diff --git a/keyboards/handwired/kbod/config.h b/keyboards/handwired/kbod/config.h
index f3d0c8bf2..a3f3e3908 100644
--- a/keyboards/handwired/kbod/config.h
+++ b/keyboards/handwired/kbod/config.h
@@ -48,7 +48,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
 /* COL2ROW, ROW2COL, or CUSTOM_MATRIX */
 #define DIODE_DIRECTION COL2ROW
- 
+
 // #define BACKLIGHT_PIN B7
 // #define BACKLIGHT_BREATHING
 // #define BACKLIGHT_LEVELS 3
@@ -159,8 +159,6 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
 //#define NO_ACTION_MACRO
 //#define NO_ACTION_FUNCTION
 
-#define PREVENT_STUCK_MODIFIERS
-
 #undef TAPPING_TOGGLE
 #define TAPPING_TOGGLE 2
 
diff --git a/keyboards/handwired/promethium/keymaps/default/config.h b/keyboards/handwired/promethium/keymaps/default/config.h
index fa86e2247..2064f3676 100644
--- a/keyboards/handwired/promethium/keymaps/default/config.h
+++ b/keyboards/handwired/promethium/keymaps/default/config.h
@@ -11,8 +11,6 @@
 /* skip bootmagic and eeconfig */
 #define BOOTMAGIC_KEY_SKIP              KC_SPACE
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGBSPS_ENABLE
 #define RGBSPS_DEMO_ENABLE
 
diff --git a/keyboards/handwired/promethium/keymaps/priyadi/config.h b/keyboards/handwired/promethium/keymaps/priyadi/config.h
index fa86e2247..2064f3676 100644
--- a/keyboards/handwired/promethium/keymaps/priyadi/config.h
+++ b/keyboards/handwired/promethium/keymaps/priyadi/config.h
@@ -11,8 +11,6 @@
 /* skip bootmagic and eeconfig */
 #define BOOTMAGIC_KEY_SKIP              KC_SPACE
 
-#define PREVENT_STUCK_MODIFIERS
-
 #define RGBSPS_ENABLE
 #define RGBSPS_DEMO_ENABLE
 
diff --git a/keyboards/handwired/space_oddity/config.h b/keyboards/handwired/space_oddity/config.h
index 9c9361ced..46d854099 100644
--- a/keyboards/handwired/space_oddity/config.h
+++ b/keyboards/handwired/space_oddity/config.h
@@ -49,10 +49,6 @@
     keyboard_report->mods == (MOD_BIT(KC_LSHIFT) | MOD_BIT(KC_RSHIFT)) \
 )
 
-/* prevent stuck modifiers */
-#define PREVENT_STUCK_MODIFIERS
-
-
 #ifdef RGB_DI_PIN
 #define RGBLIGHT_ANIMATIONS
 #define RGBLED_NUM 0