SettingsActivity: remove unused imports

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>

ui/src/main/java/com/wireguard/android/activity/SettingsActivity.kt

@@ -4,11 +4,9 @@
  */
 package com.wireguard.android.activity
 
-import android.content.ComponentName
 import android.content.Intent
 import android.os.Build
 import android.os.Bundle
-import android.service.quicksettings.TileService
 import android.view.MenuItem
 import androidx.appcompat.app.AppCompatActivity
 import androidx.fragment.app.commit