Settings Fragment Migration (Change imports)

This commit *only* changes imports and optimize imports.
We don't do anything else.

This patch can't compile pass and run test case.
We will update other patches to fix these problem.

Change list.

1. import android.app.Fragment; ->
   import androidx.fragment.app.Fragment;
2. import android.app.DialogFragment; ->
   import androidx.fragment.app.DialogFragment;
3. import android.app.ListFragment; ->
   import androidx.fragment.app.ListFragment;
4. import android.app.LoaderManager; ->
   import androidx.loader.app.LoaderManager;
5. import android.content.AsyncTaskLoader; ->
   import androidx.loader.content.AsyncTaskLoader;
6. import android.content.Loader; ->
   import androidx.loader.content.Loader;
7. import android.app.FragmentTransaction; ->
   import androidx.fragment.app.FragmentTransaction;
8. import android.app.FragmentManager; ->
   import androidx.fragment.app.FragmentManager;
9. import android.app.LoaderManager.LoaderCallbacks; ->
    import androidx.loader.app.LoaderManager.LoaderCallbacks;

Bug: 110259478
Test: Can't test it.
Change-Id: I0a3f98fff34a3494a839c3c42aeabcec3df2c8b3

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

@@ -27,7 +27,6 @@ import com.android.settings.support.actionbar.HelpResourceProvider;
 import com.android.settingslib.core.instrumentation.Instrumentable;
 
 import androidx.preference.Preference;
-import androidx.preference.PreferenceFragment;
 
 public class AccessibilitySettingsForSetupWizardActivity extends SettingsActivity {
 

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

@@ -22,8 +22,6 @@ import android.provider.Settings;
 import com.android.settings.core.TogglePreferenceController;
 
 import androidx.annotation.VisibleForTesting;
-import androidx.preference.Preference;
-import androidx.preference.PreferenceScreen;
 
 public class ColorInversionPreferenceController extends TogglePreferenceController {
     @VisibleForTesting

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

@@ -24,7 +24,6 @@ import static com.android.internal.accessibility.AccessibilityShortcutController
 import android.accessibilityservice.AccessibilityServiceInfo;
 import android.app.Activity;
 import android.app.Dialog;
-import android.app.Fragment;
 import android.content.ComponentName;
 import android.content.Context;
 import android.content.DialogInterface;
@@ -55,6 +54,8 @@ import java.util.ArrayList;
 import java.util.List;
 import java.util.Map;
 
+import androidx.fragment.app.Fragment;
+
 /**
  * Fragment for picking accessibility shortcut service
  */