Remove flag check from test.

The review process added a test to quiche. There is an unnecessary flag check using a flag that is not exported to quiche.

PiperOrigin-RevId: 574987081
diff --git a/quiche/quic/core/quic_dispatcher_test.cc b/quiche/quic/core/quic_dispatcher_test.cc
index 7ba892c..8021705 100644
--- a/quiche/quic/core/quic_dispatcher_test.cc
+++ b/quiche/quic/core/quic_dispatcher_test.cc
@@ -2846,9 +2846,6 @@
 
 TEST_P(BufferedPacketStoreTest,
        ProcessCHLOsUptoLimitAndBufferWithDifferentConnectionIdGenerator) {
-  if (!GetQuicRestartFlag(quic_request_unroutable_cid)) {
-    return;
-  }
   // Process (|kMaxNumSessionsToCreate| + 1) CHLOs,
   // the first |kMaxNumSessionsToCreate| should create connections immediately,
   // the last should be buffered.