Apply dynamic color for Erase all data(factory reset screen

Enable the dynamic color flag, and remove some unused theme in layout.

Test: Rebuilt apk and see the screen
Fix: 185557130
Change-Id: I7ed73c808be4942e5ffd461982e73a4ff7f7f2db

res/layout/main_clear.xml

@@ -21,7 +21,6 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:theme="@style/GlifV3Theme.Footer"
     android:icon="@drawable/ic_delete_accent"
     app:sucHeaderText="@string/main_clear_title">
 

res/layout/main_clear_confirm.xml

@@ -19,7 +19,6 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     android:orientation="vertical"
-    android:theme="@style/SudThemeGlifV3.DayNight"
     android:id="@+id/setup_wizard_layout"
     android:icon="@drawable/ic_delete_accent"
     app:sucHeaderText="@string/main_clear_confirm_title">

src/com/android/settings/Settings.java

@@ -28,6 +28,8 @@ import com.android.settings.enterprise.EnterprisePrivacySettings;
 import com.android.settings.overlay.FeatureFactory;
 import com.android.settings.security.SecuritySettingsFeatureProvider;
 
+import com.google.android.setupdesign.util.ThemeHelper;
+
 /**
  * Top-level Settings activity
  */
@@ -164,6 +166,7 @@ public class Settings extends SettingsActivity {
         @Override
         protected void onCreate(Bundle savedState) {
             setTheme(SetupWizardUtils.getTheme(this, getIntent()));
+            ThemeHelper.trySetDynamicColor(this);
             super.onCreate(savedState);
         }
 
@@ -176,6 +179,7 @@ public class Settings extends SettingsActivity {
         @Override
         protected void onCreate(Bundle savedState) {
             setTheme(SetupWizardUtils.getTheme(this, getIntent()));
+            ThemeHelper.trySetDynamicColor(this);
             super.onCreate(savedState);
         }