Attempt to disable assistant and seeing if this helps with lab tests

Change-Id: I4950eeee06555ca199208f678f670c3406b38d5a
diff --git a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
index 02f5502..dd768fd 100644
--- a/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
+++ b/tests/src/com/android/launcher3/ui/AbstractLauncherUiTest.java
@@ -98,6 +98,10 @@
         }
         if (TestHelpers.isInLauncherProcess()) Utilities.enableRunningInTestHarnessForTests();
         mLauncher = new LauncherInstrumentation(instrumentation);
+        try {
+            mDevice.executeShellCommand("settings delete secure assistant");
+        } catch (IOException e) {
+        }
     }
 
     @Rule