Drop Key_LEDEffectNext from the example

The example does not use LEDs, drop the key, lest we'd need to pull in the
Keyboardio-LEDControl plugin, too.

Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>

examples/Cycle/Cycle.ino

@@ -21,7 +21,7 @@
 const Key keymaps[][ROWS][COLS] PROGMEM = {
   [0] = KEYMAP_STACKED
   (
-   Key_LEDEffectNext, Key_1, Key_2, Key_3, Key_4, Key_5, Key_LEDEffectNext,
+   Key_NoKey,    Key_1, Key_2, Key_3, Key_4, Key_5, Key_NoKey,
    Key_Backtick, Key_Q, Key_W, Key_E, Key_R, Key_T, Key_Tab,
    Key_PageUp,   Key_A, Key_S, Key_D, Key_F, Key_G,
    Key_PageDn,   Key_Z, Key_X, Key_C, Key_V, Key_B, Key_Esc,