cmd/link: remove AIX special case for first type descriptor
It doesn't seem to be necessary, and removing it seems cleaner
than adding an AIX case to the code in runtime.moduleTypelinks.
Fixes #77365
Change-Id: I59fa56abf42e18017bd112481ea09d0cca47d105
Reviewed-on: https://go-review.googlesource.com/c/go/+/740220 Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org> Reviewed-by: Cherry Mui <cherryyz@google.com>