gfe-relnote: Deprecate gfe2_restart_flag_quic_enable_accept_random_ipn.

PiperOrigin-RevId: 253603387
Change-Id: I462d960d7cccaab09c908e0fefb151367ca58007
diff --git a/quic/core/uber_received_packet_manager_test.cc b/quic/core/uber_received_packet_manager_test.cc
index b717178..d7d49ee 100644
--- a/quic/core/uber_received_packet_manager_test.cc
+++ b/quic/core/uber_received_packet_manager_test.cc
@@ -239,13 +239,8 @@
 
   RecordPacketReceipt(3, clock_.ApproximateNow());
   MaybeUpdateAckTimeout(kInstigateAck, 3);
-  if (GetQuicRestartFlag(quic_enable_accept_random_ipn)) {
-    // Delayed ack is scheduled.
-    CheckAckTimeout(clock_.ApproximateNow() + kDelayedAckTime);
-  } else {
-    // Should ack immediately since we have missing packets.
-    CheckAckTimeout(clock_.ApproximateNow());
-  }
+  // Delayed ack is scheduled.
+  CheckAckTimeout(clock_.ApproximateNow() + kDelayedAckTime);
 
   RecordPacketReceipt(2, clock_.ApproximateNow());
   MaybeUpdateAckTimeout(kInstigateAck, 2);
@@ -764,7 +759,6 @@
 
 TEST_F(UberReceivedPacketManagerTest, AckSendingDifferentPacketNumberSpaces) {
   manager_->EnableMultiplePacketNumberSpacesSupport();
-  SetQuicRestartFlag(quic_enable_accept_random_ipn, true);
   EXPECT_FALSE(HasPendingAck());
   EXPECT_FALSE(manager_->IsAckFrameUpdated());