perf(transport): remove Server::timers

The current `neqo_transport::server::Server::timers` has a large performance overhead, especially when serving small amount of connections. See mozilla#1780 for details. This commit optimizes for the small-number-of-connections case, keeping a single callback timestamp only, iterating each connection when there is no other work to be done.
mxinden · Apr 1, 2024 · 5c1d063 · 5c1d063
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diff --git a/neqo-common/src/lib.rs b/neqo-common/src/lib.rs
@@ -14,7 +14,6 @@ pub mod hrtime;
 mod incrdecoder;
 pub mod log;
 pub mod qlog;
-pub mod timer;
 pub mod tos;
 
 use std::fmt::Write;