internal/traceparser: skip test on iOS

The iOS test harness only include files from the tested package or
below. Skip a test on iOS that required files outside the package.

Change-Id: Iaee7e488eb783b443f2b2b84d8be2de01227ab62
Reviewed-on: https://go-review.googlesource.com/c/144110
Run-TryBot: Elias Naur <elias.naur@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Peter Weinberger <pjw@google.com>

src/internal/traceparser/parser_test.go

@@ -8,6 +8,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"runtime"
 	"strings"
 	"testing"
 )
@@ -27,6 +28,9 @@ var (
 )
 
 func TestRemoteFiles(t *testing.T) {
+	if runtime.GOOS == "darwin" && (runtime.GOARCH == "arm" || runtime.GOARCH == "arm64") {
+		t.Skipf("files from outside the package are not available on %s/%s", runtime.GOOS, runtime.GOARCH)
+	}
 	files, err := ioutil.ReadDir(otherDir)
 	if err != nil {
 		t.Fatal(err)