Move hiddenapi tests from presubmit to postsubmit.

They take longer than 1m which makes them flaky in presubmit.

Bug: 139426645, 139399213, 139332698
Test: none
Change-Id: I68cf62fbc1be92154636d1dba61c9148cc168948
diff --git a/tests/signature/TEST_MAPPING b/tests/signature/TEST_MAPPING
index 2c3cf09..dc92081 100644
--- a/tests/signature/TEST_MAPPING
+++ b/tests/signature/TEST_MAPPING
@@ -28,31 +28,19 @@
       "name": "CtsIntentSignatureTestCases"
     },
     {
-      "name": "CtsHiddenApiBlacklistApi27TestCases"
+        "name": "CtsHiddenApiKillswitchDebugClassTestCases"
     },
     {
-      "name": "CtsHiddenApiBlacklistCurrentApiTestCases"
+        "name": "CtsHiddenApiKillswitchWhitelistTestCases"
     },
     {
-      "name": "CtsHiddenApiBlacklistDebugClassTestCases"
+        "name": "CtsHiddenApiKillswitchWildcardTestCases"
     },
     {
-      "name": "CtsHiddenApiKillswitchDebugClassTestCases"
+        "name": "CtsSystemApiAnnotationTestCases"
     },
     {
-      "name": "CtsHiddenApiKillswitchWhitelistTestCases"
-    },
-    {
-      "name": "CtsHiddenApiKillswitchWildcardTestCases"
-    },
-    {
-      "name": "CtsSystemApiAnnotationTestCases"
-    },
-    {
-      "name": "CtsSystemApiSignatureTestCases"
-    },
-    {
-      "name": "CtsHiddenApiBlacklistApi28TestCases"
+        "name": "CtsSystemApiSignatureTestCases"
     },
     {
       "name": "CtsSharedLibsApiSignatureTestCases"
@@ -61,6 +49,20 @@
       "name": "signature-host-tests",
       "host" : true
     }
+  ],
+  "postsubmit": [
+    {
+      "name": "CtsHiddenApiBlacklistApi27TestCases"
+    },
+    {
+        "name": "CtsHiddenApiBlacklistApi28TestCases"
+    },
+    {
+      "name": "CtsHiddenApiBlacklistCurrentApiTestCases"
+    },
+    {
+      "name": "CtsHiddenApiBlacklistDebugClassTestCases"
+    }
   ]
 }