[Keyboard] Fix Aurora Lily58 default encoder behaviour (#19424)

keyboards/splitkb/aurora/lily58/lily58.c

@@ -286,8 +286,8 @@ bool encoder_update_kb(uint8_t index, bool clockwise) {
     if (!encoder_update_user(index, clockwise)) {
         return false;
     }
-    // 0 and 1 are left-half encoders,
-    // 2 and 3 are right-half encoders
+    // 0 is left-half encoder,
+    // 1 is right-half encoder
     if (index == 0) {
         // Volume control
         if (clockwise) {
@@ -296,20 +296,6 @@ bool encoder_update_kb(uint8_t index, bool clockwise) {
             tap_code(KC_VOLD);
         }
     } else if (index == 1) {
-        // Volume control
-        if (clockwise) {
-            tap_code(KC_VOLU);
-        } else {
-            tap_code(KC_VOLD);
-        }
-    } else if (index == 2) {
-        // Page up/Page down
-        if (clockwise) {
-            tap_code(KC_PGDN);
-        } else {
-            tap_code(KC_PGUP);
-        }
-    } else if (index == 3) {
         // Page up/Page down
         if (clockwise) {
             tap_code(KC_PGDN);