Compatibilize flicker tests with flicker infra refactor

Rename FlickerTestParameter(Factory) to FlickerTest(Factory)
Rename testSpec to flicker
Update factory method naming
Fix imports
Fix ktfmt formatting issues
Remove launcher strategy from helpers

Bug: 255715397
Test: atest FlickerTests WMShellFlickerTests
Change-Id: If0143ae3d94fd78a8339a69287072b3edbbbaca1
diff --git a/tests/FlickerTests/AndroidTest.xml b/tests/FlickerTests/AndroidTest.xml
index a7d6a01..84781b4 100644
--- a/tests/FlickerTests/AndroidTest.xml
+++ b/tests/FlickerTests/AndroidTest.xml
@@ -19,6 +19,8 @@
         <option name="run-command" value="pm disable com.google.android.internal.betterbug" />
         <!-- restart launcher to activate TAPL -->
         <option name="run-command" value="setprop ro.test_harness 1 ; am force-stop com.google.android.apps.nexuslauncher" />
+        <!-- Ensure output directory is empty at the start -->
+        <option name="run-command" value="rm -rf /sdcard/flicker" />
     </target_preparer>
     <target_preparer class="com.android.tradefed.targetprep.suite.SuiteApkInstaller">
         <option name="cleanup-apks" value="true"/>