cmd/go: convert TestBuildDryRunWithCgo to the script framework

Part of converting all tests to script framework to improve
test parallelism.

Updates #36320
Updates #17751

Change-Id: I2d14c07c590cc618c66f27fdc3a2bb8120c6d646
Reviewed-on: https://go-review.googlesource.com/c/go/+/214427
Reviewed-by: Jay Conrod <jayconrod@google.com>

src/cmd/go/go_test.go

@@ -1694,27 +1694,6 @@ func TestShadowingLogic(t *testing.T) {
 	}
 }
 
-func TestBuildDryRunWithCgo(t *testing.T) {
-	if !canCgo {
-		t.Skip("skipping because cgo not enabled")
-	}
-
-	tg := testgo(t)
-	defer tg.cleanup()
-	tg.tempFile("foo.go", `package main
-
-/*
-#include <limits.h>
-*/
-import "C"
-
-func main() {
-        println(C.INT_MAX)
-}`)
-	tg.run("build", "-n", tg.path("foo.go"))
-	tg.grepStderrNot(`os.Stat .* no such file or directory`, "unexpected stat of archive file")
-}
-
 func TestCgoDependsOnSyscall(t *testing.T) {
 	if testing.Short() {
 		t.Skip("skipping test that removes $GOROOT/pkg/*_race in short mode")

src/cmd/go/testdata/script/build_dash_n_cgo.txt

@@ -0,0 +1,18 @@
+# Tests golang.org/issue/14944
+
+[!cgo] skip
+
+go build -n foo.go
+! stderr 'os.Stat .* no such file or directory' # there shouldn't be a stat of the archive file
+
+-- foo.go --
+package main
+
+/*
+#include <limits.h>
+*/
+import "C"
+
+func main() {
+        println(C.INT_MAX)
+}