Remove QuicFecGroup::MinProtectedPacket which is no longer needed. No behavior change expected.

net/quic/quic_packet_creator.cc

Index: net/quic/quic_packet_creator.cc
diff --git a/net/quic/quic_packet_creator.cc b/net/quic/quic_packet_creator.cc
index 23388b5af574056fb9b77498413e34923f61ad49..f3800449c5bcf3683b721fa334df6063e94fe469 100644
--- a/net/quic/quic_packet_creator.cc
+++ b/net/quic/quic_packet_creator.cc
@@ -531,8 +531,7 @@ SerializedPacket QuicPacketCreator::SerializeFec(char* buffer,
   fec_group_.reset(nullptr);
   packet_size_ = 0;
   LOG_IF(DFATAL, packet == nullptr)
-      << "Failed to serialize fec packet for group:"
-      << fec_group_->MinProtectedPacket();
+      << "Failed to serialize fec packet for group:" << fec_group_number_;
   DCHECK_GE(max_packet_length_, packet->length());
   // Immediately encrypt the packet, to ensure we don't encrypt the same packet
   // packet number multiple times.