Revert "Fix broken TaplTestsTaskbar splitscreen test cases"

This reverts commit ccc10128f174a5b2b651f819271982d1e00987b9.

Reason for revert: the underlying issue will be fixed in b/279873859

Change-Id: I37d4c16bc907fd31ef983d3c6974b3376543c3ce
diff --git a/quickstep/tests/src/com/android/quickstep/TaplTestsTaskbar.java b/quickstep/tests/src/com/android/quickstep/TaplTestsTaskbar.java
index 4540eee..6243471 100644
--- a/quickstep/tests/src/com/android/quickstep/TaplTestsTaskbar.java
+++ b/quickstep/tests/src/com/android/quickstep/TaplTestsTaskbar.java
@@ -27,7 +27,6 @@
 import androidx.test.filters.LargeTest;
 import androidx.test.runner.AndroidJUnit4;
 
-import com.android.launcher3.tapl.Overview;
 import com.android.launcher3.tapl.Taskbar;
 import com.android.launcher3.ui.TaplTestsLauncher3;
 import com.android.launcher3.util.LauncherLayoutBuilder;
@@ -64,10 +63,6 @@
                 "com.android.launcher3.testcomponent.BaseTestingActivity");
         mLauncherLayout = TestUtil.setLauncherDefaultLayout(mTargetContext, layoutBuilder);
         TaplTestsLauncher3.initialize(this);
-        Overview overview = mLauncher.getWorkspace().switchToOverview();
-        if (overview.hasTasks()) {
-            overview.dismissAllTasks();
-        }
 
         startAppFast(CALCULATOR_APP_PACKAGE);
         mLauncher.enableBlockTimeout(true);