doc/go1.22: remove compiler TODO

For golang#61422.

Change-Id: Id4eed9affde20857d6b60c0b6d7d1443ea5e460b
Reviewed-on: https://go-review.googlesource.com/c/go/+/548938
Reviewed-by: Cherry Mui <cherryyz@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Michael Pratt <mpratt@google.com>
Reviewed-by: Keith Randall <khr@golang.org>

doc/go1.22.html

@@ -212,10 +212,6 @@ <h2 id="runtime">Runtime</h2>
 
 <h2 id="compiler">Compiler</h2>
 
-<p>
-  TODO: complete this section.
-</p>
-
 <p><!-- https://go.dev/issue/61577 -->
   <a href="https://go.dev/doc/pgo">Profile-guided Optimization (PGO)</a> builds
   can now devirtualize a higher proportion of calls than previously possible.