gfe-relnote: Deprecate gfe2_reloadable_flag_quic_donot_process_small_initial_packets.

PiperOrigin-RevId: 278426934
Change-Id: I238ad27ac4456e016568073d8edfe89a28c90d0e

quic/core/quic_dispatcher.cc

diff --git a/quic/core/quic_dispatcher.cc b/quic/core/quic_dispatcher.cc
index c1786e6..dae67fa 100644
--- a/quic/core/quic_dispatcher.cc
+++ b/quic/core/quic_dispatcher.cc
@@ -454,12 +454,10 @@
       return true;
     }
 
-    if (GetQuicReloadableFlag(quic_donot_process_small_initial_packets) &&
-        crypto_config()->validate_chlo_size() &&
+    if (crypto_config()->validate_chlo_size() &&
         packet_info.form == IETF_QUIC_LONG_HEADER_PACKET &&
         packet_info.long_packet_type == INITIAL &&
         packet_info.packet.length() < kMinClientInitialPacketLength) {
-      QUIC_RELOADABLE_FLAG_COUNT(quic_donot_process_small_initial_packets);
       StatelessConnectionTerminator terminator(
           packet_info.destination_connection_id, packet_info.version,
           helper_.get(), time_wait_list_manager_.get());

quic/core/quic_dispatcher_test.cc

diff --git a/quic/core/quic_dispatcher_test.cc b/quic/core/quic_dispatcher_test.cc
index c20fe94..f8c07dc 100644
--- a/quic/core/quic_dispatcher_test.cc
+++ b/quic/core/quic_dispatcher_test.cc
@@ -1275,7 +1275,6 @@
 }
 
 TEST_F(QuicDispatcherTest, DoNotProcessSmallPacket) {
-  SetQuicReloadableFlag(quic_donot_process_small_initial_packets, true);
   CreateTimeWaitListManager();
   QuicSocketAddress client_address(QuicIpAddress::Loopback4(), 1);