Move basic aaudio tests to presubmit.

Bug: 244214753
Test: atest --test-mapping frameworks/av/services/audiopolicy:presubmit
Change-Id: I011b67efebbc4af518c044c8e4dca85bdf00617c
diff --git a/services/audiopolicy/TEST_MAPPING b/services/audiopolicy/TEST_MAPPING
index 2612393..fa3a5d3 100644
--- a/services/audiopolicy/TEST_MAPPING
+++ b/services/audiopolicy/TEST_MAPPING
@@ -11,9 +11,7 @@
           "include-filter": "com.google.android.gts.audio.AudioHostTest#testTwoChannelCapturing"
         }
       ]
-    }
-  ],
-  "postsubmit": [
+    },
     {
       "name": "CtsNativeMediaAAudioTestCases",
       "options" : [