doc: remove dtrace from tierlist

PR-URL: nodejs/node#43606
Reviewed-By: Gireesh Punathil <gpunathi@in.ibm.com>
Reviewed-By: Matteo Collina <matteo.collina@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
Reviewed-By: Darshan Sen <raisinten@gmail.com>
Reviewed-By: Gerhard Stöbich <deb2001-github@yahoo.de>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

doc/contributing/diagnostic-tooling-support-tiers.md

@@ -134,10 +134,8 @@ The tools are currently assigned to Tiers as follows:
 | Debugger | Command line Debug Client | ? | Yes | 1 |
 | Tracing | trace\_events (API) | No | Yes | 1 |
 | Tracing | trace\_gc | No | Yes | 1 |
-| Tracing | DTrace | No | Partial | 3 |
 | Tracing | LTTng | No | Removed? | N/A |
 | Tracing | Systemtap | No | Partial | ? |
-| Profiling | DTrace | No | Partial | 3 |
 | Profiling | Windows Xperf | No | ? | ? |
 | F/P/T | appmetrics | No | No | ? |
 | M/T | eBPF tracing tool | No | No | ? |