[TF][FIX] drop BillingController.isReady() calls in StarsController after upstream rebase

Author: Kartatz

TMessagesProj/src/main/java/org/telegram/ui/Stars/StarsController.java

@@ -745,7 +745,7 @@ private boolean isInvoiceBillingDisabled(TLRPC.InputPeer purposePeer) {
 
     public boolean canBuy(TLRPC.InputPeer purposePeer) {
         if (purposePeer != null && isInvoiceBillingDisabled(purposePeer)) {
-            return BillingController.getInstance().isReady();
+            return false;
         }
 
         return true;
@@ -839,17 +839,9 @@ public void buy(
             return;
         }
 
-        if (!BillingController.getInstance().isReady()) {
-            if (whenDone != null) {
-                whenDone.run(false, "INVOICE DISABLED");
-            }
-            return;
+        if (whenDone != null) {
+            whenDone.run(false, "INVOICE DISABLED");
         }
-
-        final TLRPC.TL_inputStorePaymentStarsTopup payload = new TLRPC.TL_inputStorePaymentStarsTopup();
-        payload.stars = option.stars;
-        payload.currency = option.currency;
-        payload.amount = option.amount;
     }
 
     public void buyGift(Activity activity, TL_stars.TL_starsGiftOption option, long user_id, Utilities.Callback2<Boolean, String> whenDone) {