Run VirtualizationTestCases for presubmit builds

Bug: 192204736
Test: watch TH
Change-Id: Id4cd15b551c3cd8db20276401cfc95b1010f9db6
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 5218abb..b805d03 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -5,12 +5,7 @@
     },
     {
       "name": "ComposHostTestCases"
-    }
-  ],
-  "postsubmit": [
-    // TODO(jiyong): promote this to presubmit. That currently doesn't work because
-    // this test is skipped for cf_x86_64_phone (not aosp_cf_x86_64_phone), but tradefed
-    // somehow thinks that the test wasn't executed at all and reports it as a failure.
+    },
     {
       "name": "VirtualizationTestCases"
     }