Don't root for pushing and installing apks

Bug: 256250427
Test: sts-tradefed run sts-dynamic-develop -m CtsAccessibilityServiceTestCases
Change-Id: I1aa383af0c761d84dddd3a5834c838b525fe3571
diff --git a/tests/accessibilityservice/AndroidTest.xml b/tests/accessibilityservice/AndroidTest.xml
index e325a72..fdd6495 100644
--- a/tests/accessibilityservice/AndroidTest.xml
+++ b/tests/accessibilityservice/AndroidTest.xml
@@ -22,7 +22,6 @@
         <option name="run-command" value="cmd accessibility set-bind-instant-service-allowed true" />
         <option name="teardown-command" value="cmd accessibility set-bind-instant-service-allowed false" />
     </target_preparer>
-    <target_preparer class="com.android.tradefed.targetprep.RootTargetPreparer"/>
     <target_preparer class="com.android.tradefed.targetprep.PushFilePreparer">
         <option name="cleanup" value="true" />
         <option name="push-file" key="CtsAccessibilityMultipleServicesApp.apk"