gfe-relnote: Deprecate gfe2_reloadable_flag_quic_reject_unprocessable_packets_statelessly.

PiperOrigin-RevId: 283749872
Change-Id: I81d78780b2fe832f86a77e37c560e2ea95995cc7
diff --git a/quic/core/quic_dispatcher.cc b/quic/core/quic_dispatcher.cc
index b9252c8..a1adda4 100644
--- a/quic/core/quic_dispatcher.cc
+++ b/quic/core/quic_dispatcher.cc
@@ -556,12 +556,8 @@
     QUIC_DLOG(INFO)
         << "Packet without version arrived for unknown connection ID "
         << packet_info.destination_connection_id;
-    if (GetQuicReloadableFlag(quic_reject_unprocessable_packets_statelessly)) {
-      QUIC_RELOADABLE_FLAG_COUNT(quic_reject_unprocessable_packets_statelessly);
-      MaybeResetPacketsWithNoVersion(packet_info);
-      return kFateDrop;
-    }
-    return kFateTimeWait;
+    MaybeResetPacketsWithNoVersion(packet_info);
+    return kFateDrop;
   }
 
   // Let the connection parse and validate packet number.