Run MicrodroidTestApp test without DisableMicrodroidDebugPolicyPreparer

MicrodroidTestApp is CTS equivalent and should be able to run on the
user build device.

Follow-up CL will fix issues in user build.

Bug: 272496125
Test: atest.
Change-Id: Ia1358255b9822af8c5d82fc866befa4b3bbb2abb
diff --git a/tests/testapk/AndroidTest.xml b/tests/testapk/AndroidTest.xml
index 725a1e4..929dd31 100644
--- a/tests/testapk/AndroidTest.xml
+++ b/tests/testapk/AndroidTest.xml
@@ -23,7 +23,6 @@
         <option name="test-file-name" value="MicrodroidTestApp.apk" />
         <option name="test-file-name" value="MicrodroidVmShareApp.apk" />
     </target_preparer>
-    <target_preparer class="com.android.microdroid.test.preparer.DisableMicrodroidDebugPolicyPreparer" />
     <test class="com.android.tradefed.testtype.AndroidJUnitTest" >
         <option name="package" value="com.android.microdroid.test" />
         <option name="runner" value="androidx.test.runner.AndroidJUnitRunner" />