cmd/compile: simplified test case (cleanup)
cmd/compile: simplified test case (cleanup)

Follow-up on https://golang.org/cl/124595; no semantic changes.

Updates #26411.

Change-Id: Ic1c4622dbf79529ff61530f9c25ec742c2abe5ca
Reviewed-on: https://go-review.googlesource.com/c/142720
Run-TryBot: Robert Griesemer <a6752097faebf1f02d80107d77a9be009089afe3@golang.org>
Reviewed-by: Emmanuel Odeke <277f8eaa8c7dfbc55c17bf5e30561c1a9c45c569@gmail.com>
TryBot-Result: Gobot Gobot <66cb808b70d30c07676d5e946fee83fd561249e5@golang.org>

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