Fix didn't bypass touch events with non-empty passthrough Region

When the action down motion event contains in the
mTouchExplorationPassthroughRegion, Touchxplorer didn't bypass the
motion event due to enabled multi-finger gesture.

Bug: 152597224
Test: manual test with set mult-finger-gesture enabled non-empty
      passthrough region
      atest CtsAccessibilityServiceTestCases:TouchExplorerTest
      atest FrameworksServicesTests:TouchExplorerTest
Change-Id: Ifef6a4da98aca8144bfd6deaceb1a110cfdbe5df

services/accessibility/java/com/android/server/accessibility/gestures/TouchExplorer.java

@@ -793,10 +793,6 @@ public class TouchExplorer extends BaseEventStreamTransformation
      */
     private void handleMotionEventStateDelegating(
             MotionEvent event, MotionEvent rawEvent, int policyFlags) {
-        if (mGestureDetector.isMultiFingerGesturesEnabled()) {
-            // Multi-finger gestures conflict with this functionality.
-            return;
-        }
         switch (event.getActionMasked()) {
             case MotionEvent.ACTION_DOWN: {
                 Slog.e(LOG_TAG, "Delegating state can only be reached if "