Disable dexlayout_test on target.

Target doesn't have diff to compare output files.

Bug: 29921113
Test: mm test-art-target-gtest-dexlayout_test
Change-Id: I244c0c74214b780676283de1b309978667ff58e3
diff --git a/runtime/common_runtime_test.h b/runtime/common_runtime_test.h
index d99c6ae..c07c03e 100644
--- a/runtime/common_runtime_test.h
+++ b/runtime/common_runtime_test.h
@@ -195,6 +195,12 @@
   DISALLOW_COPY_AND_ASSIGN(CheckJniAbortCatcher);
 };
 
+#define TEST_DISABLED_FOR_TARGET() \
+  if (kIsTargetBuild) { \
+    printf("WARNING: TEST DISABLED FOR TARGET\n"); \
+    return; \
+  }
+
 #define TEST_DISABLED_FOR_MIPS() \
   if (kRuntimeISA == kMips) { \
     printf("WARNING: TEST DISABLED FOR MIPS\n"); \