Display gesture education button in touchpad settings

1. We hid this button before.
2. Display the button in the latest release.

Bug: 276001904
Test: manual
Change-Id: I20bfc76162eeb99e85afede30e9fe6145251d65d
diff --git a/src/com/android/settings/inputmethod/TouchGesturesButtonPreferenceController.java b/src/com/android/settings/inputmethod/TouchGesturesButtonPreferenceController.java
index 7efa637..bbe65c1 100644
--- a/src/com/android/settings/inputmethod/TouchGesturesButtonPreferenceController.java
+++ b/src/com/android/settings/inputmethod/TouchGesturesButtonPreferenceController.java
@@ -63,9 +63,7 @@
 
     @Override
     public int getAvailabilityStatus() {
-        boolean touchGestureDeveloperMode = FeatureFlagUtils
-                .isEnabled(mContext, FeatureFlagUtils.SETTINGS_NEW_KEYBOARD_TRACKPAD_GESTURE);
-        return touchGestureDeveloperMode ? AVAILABLE : CONDITIONALLY_UNAVAILABLE;
+        return AVAILABLE;
     }
 
     private void showTouchpadGestureEducation() {