remove unnecessary sentence

draft-ietf-quic-transport.md

@@ -3209,11 +3209,10 @@ protection for the reasons described in Section 9.3 of {{QUIC-TLS}}.
 Endpoints that track all individual packets for the purposes of detecting
 duplicates are at risk of accumulating excessive state.  The data required for
 detecting duplicates can be limited by maintaining a minimum packet number below
-which all packets are immediately dropped.  Endpoints that use a minimum packet
-number need to ensure that any value does not cause delayed packets to be
-dropped.  Any minimum needs to account for large variations in round trip time,
-which includes the possibility that a peer might probe a network path with a
-much longer round trip time; see {{migration}}.
+which all packets are immediately dropped.  Any minimum needs to account for
+large variations in round trip time, which includes the possibility that a peer
+might probe a network path with a much longer round trip time; see
+{{migration}}.
 
 Packet number encoding at a sender and decoding at a receiver are described in
 {{packet-encoding}}.