Revert "Turn the LED off if the modifier is inactive"

This reverts commit f3d4961578, because the
interaction with LED modes with it is worse than the issue it fixed.

src/Kaleidoscope/LED-ActiveModColor.cpp

@@ -51,8 +51,6 @@ void ActiveModColorEffect::loopHook(bool is_post_clear) {
 
       if (Keyboard.isModifierActive(k.keyCode))
         LEDControl.led_set_crgb_at(r, c, highlight_color);
-      else
-        LEDControl.led_set_crgb_at(r, c, CRGB(0, 0, 0));
     }
   }
 }