Revert "Don't enter deep sleep while advertising for reconnection"

This reverts commit 2842def.

Author: zachgersh

plugins/Kaleidoscope-Hardware-Keyboardio-Preonic/src/kaleidoscope/device/keyboardio/Preonic.h

@@ -670,12 +670,6 @@ class Preonic : public kaleidoscope::device::Base<PreonicProps> {
       return false;
     }
 
-    // Don't sleep if we have a bonded device but are disconnected —
-    // keep advertising so we can reconnect when the host wakes
-    if (!ble().connected() && Bluefruit.Advertising.isRunning()) {
-      return false;
-    }
-
     if (now - last_activity_time_ >= DEEP_SLEEP_TIMEOUT_MS) {
       return true;
     }