Do not request rewarded ad automatically

src/main/java/com/kdanmobile/admanager/admob/AdMobRewardedAdManager.kt

@@ -100,7 +100,6 @@ class AdMobRewardedAdManager: RewardedAdManager {
         return rewardedVideoAdMap[adUnitId]?.let {
             it.show()
             rewardedAdStatusMap[adUnitId] = RewardedAdStatus.NOT_INIT
-            request(adUnitId)
             true
         } ?: false
     }