tracing: remove shutdown-on-signal

This feature cannot be reasonably implemented this way
without inherently being susceptible to race conditions
that lead to hangs, crashes, etc.

What’s more, implementing this for some signals only
(and it can only be implemented for some signals at all)
may lead to the impression that it is a guaranteed
feature, when really consumers of the tracing output
*need* to be able to handle abrupt ends meaningfully.

Fixes: #14802
Fixes: #22528

PR-URL: #22734
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Ali Ijaz Sheikh <ofrobots@google.com>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>

src/node.cc

@@ -2052,7 +2052,6 @@ void SetupProcessObject(Environment* env,
 
 void SignalExit(int signo) {
  uv_tty_reset_mode();
- v8_platform.StopTracingAgent();
 #ifdef __FreeBSD__
  // FreeBSD has a nasty bug, see RegisterSignalHandler for details
  struct sigaction sa;