Don't dex2oat the art image when running jctf tests

Change-Id: Iaf18021fe45c7d96e1239eb624930bba59dcb0bc
diff --git a/src/test/java/com/android/tools/r8/R8RunArtTestsTest.java b/src/test/java/com/android/tools/r8/R8RunArtTestsTest.java
index 52952a5..8b2eaf5 100644
--- a/src/test/java/com/android/tools/r8/R8RunArtTestsTest.java
+++ b/src/test/java/com/android/tools/r8/R8RunArtTestsTest.java
@@ -2118,6 +2118,7 @@
     ArtCommandBuilder builder = buildArtCommand(processedFile, specification, dexVm);
     if (dexVm.isNewerThan(DexVm.ART_4_4_4_HOST)) {
       builder.appendArtOption("-Ximage:/system/non/existent/image.art");
+      builder.appendArtOption("-Xnoimage-dex2oat");
     }
     for (String s : ToolHelper.getBootLibs(dexVm)) {
       builder.appendBootClassPath(new File(s).getCanonicalPath());