Move CtsCompanionDeviceManagerMultiProcessTestCases to presubmit

Bug: 321051359
Test: cts
Change-Id: I668e9f47abd4248e6fb61f47d07f44f721e64255
diff --git a/services/companion/TEST_MAPPING b/services/companion/TEST_MAPPING
index ae6d591..02a3b8f 100644
--- a/services/companion/TEST_MAPPING
+++ b/services/companion/TEST_MAPPING
@@ -8,9 +8,7 @@
     },
     {
       "name": "CtsCompanionDeviceManagerNoCompanionServicesTestCases"
-    }
-  ],
-  "postsubmit": [
+    },
     {
       "name": "CtsCompanionDeviceManagerMultiProcessTestCases"
     }