gfe-relnote: (n/a) Deprecate --quic_sanitize_ack_delay.

PiperOrigin-RevId: 295158813
Change-Id: Ie966b9ef70bf22ad243303fd886a38f7e31b120f
diff --git a/quic/core/quic_sent_packet_manager.cc b/quic/core/quic_sent_packet_manager.cc
index a6c875b..92e6e84 100644
--- a/quic/core/quic_sent_packet_manager.cc
+++ b/quic/core/quic_sent_packet_manager.cc
@@ -104,8 +104,7 @@
       pto_exponential_backoff_start_point_(0),
       pto_rttvar_multiplier_(4),
       num_tlp_timeout_ptos_(0),
-      one_rtt_packet_acked_(false),
-      sanitize_ack_delay_(GetQuicReloadableFlag(quic_sanitize_ack_delay)) {
+      one_rtt_packet_acked_(false) {
   SetSendAlgorithm(congestion_control_type);
 }
 
@@ -1137,8 +1136,7 @@
                                             QuicTime ack_receive_time) {
   DCHECK(packets_acked_.empty());
   DCHECK_LE(largest_acked, unacked_packets_.largest_sent_packet());
-  if (sanitize_ack_delay_ && ack_delay_time > peer_max_ack_delay()) {
-    QUIC_RELOADABLE_FLAG_COUNT(quic_sanitize_ack_delay);
+  if (ack_delay_time > peer_max_ack_delay()) {
     ack_delay_time = peer_max_ack_delay();
   }
   rtt_updated_ =