Keymap introspection for combos. (#19670)

keyboards/3w6/keymaps/helltm/combos.h

@@ -19,16 +19,14 @@
 #define CB(name, action, ...) C_##name,
 enum user_combos {
 #include "combos.def"
-    COMBO_LENGTH
 };
 #undef CB
-uint16_t COMBO_LEN = COMBO_LENGTH;
 
 #define CB(name, action, ...) const uint16_t PROGMEM name##_combo[] = {__VA_ARGS__, COMBO_END};
 #include "combos.def"
 #undef CB
 
-combo_t key_combos[COMBO_LENGTH] = {
+combo_t key_combos[] = {
 #define CB(name, action, ...) COMBO(name##_combo, action),
 #include "combos.def"
 #undef CB