cmd/link: remove darwin/arm test

The darwin/arm port is removed in Go 1.15. Setting GOOS=darwin
GOARCH=arm will fail, therefore "go test cmd/link" on macOS will
fail (in non -short mode). Remove this test point.

Updates #37611.

Change-Id: Ia9531c4b4a6692a0c49153517af9fdddd1f3e0bf
Reviewed-on: https://go-review.googlesource.com/c/go/+/227341
Reviewed-by: Ian Lance Taylor <iant@golang.org>
diff --git a/src/cmd/link/dwarf_test.go b/src/cmd/link/dwarf_test.go
index 8a1b489..5926f09 100644
--- a/src/cmd/link/dwarf_test.go
+++ b/src/cmd/link/dwarf_test.go
@@ -193,9 +193,7 @@
 	}
 	cc := "CC=" + runtime.GOROOT() + "/misc/ios/clangwrap.sh"
 	// iOS doesn't allow unmapped segments, so iOS executables don't have DWARF.
-	testDWARF(t, "", false, cc, "CGO_ENABLED=1", "GOOS=darwin", "GOARCH=arm", "GOARM=7")
 	testDWARF(t, "", false, cc, "CGO_ENABLED=1", "GOOS=darwin", "GOARCH=arm64")
 	// However, c-archive iOS objects have embedded DWARF.
-	testDWARF(t, "c-archive", true, cc, "CGO_ENABLED=1", "GOOS=darwin", "GOARCH=arm", "GOARM=7")
 	testDWARF(t, "c-archive", true, cc, "CGO_ENABLED=1", "GOOS=darwin", "GOARCH=arm64")
 }