MINOR: quic: Wrong loss delay computation

I really do not know where does this statement come from even after having
checked several drafts.
diff --git a/src/xprt_quic.c b/src/xprt_quic.c
index dc487b2..f4a825b 100644
--- a/src/xprt_quic.c
+++ b/src/xprt_quic.c
@@ -1670,7 +1670,6 @@
 
 	ql = &qc->path->loss;
 	loss_delay = QUIC_MAX(ql->latest_rtt, ql->srtt >> 3);
-	loss_delay += loss_delay >> 3;
 	loss_delay = QUIC_MAX(loss_delay, MS_TO_TICKS(QUIC_TIMER_GRANULARITY));
 
 	node = eb64_first(pkts);