Remove select-to-speak toogle button from Vision Settings.

Integrate with shortcut design to to make the UI of Select to
Speak consistent in SUW and general Accessibility settings.

Bug: 148042379
Test: local test
Change-Id: I53fdac604e717303fef9526230b20e9901d55915

src/com/android/settings/accessibility/ToggleSelectToSpeakPreferenceFragmentForSetupWizard.java

@@ -20,7 +20,7 @@ import android.app.settings.SettingsEnums;
 import android.os.Bundle;
 
 public class ToggleSelectToSpeakPreferenceFragmentForSetupWizard
-        extends ToggleAccessibilityServicePreferenceFragment {
+        extends InvisibleToggleAccessibilityServicePreferenceFragment {
 
     private boolean mToggleSwitchWasInitiallyChecked;