Remove duplicate postsubmit.

Presubmits already get ran on every postsubmit build.

Bug: 233084498
Change-Id: Ic076b2699f3dd407682f172a37f0e80b48985097
diff --git a/TEST_MAPPING b/TEST_MAPPING
index 012e2fc..d142bb6 100644
--- a/TEST_MAPPING
+++ b/TEST_MAPPING
@@ -3,10 +3,5 @@
         {
             "name": "IntentResolverUnitTests"
         }
-    ],
-    "postsubmit": [
-        {
-            "name": "IntentResolverUnitTests"
-        }
     ]
 }