Remove intent-filters from SettingsSliceProvider

And remove unused methods from SliceDeepLinkSpringBoard.

This is part 1 of b/110156445

Bug: 110156445
Test: atest
Change-Id: Iab36a97332fd847ed911a9e34b505fd4a64522d3

src/com/android/settings/slices/SliceDeepLinkSpringBoard.java

@@ -21,8 +21,6 @@ import android.os.Bundle;
 import android.provider.Settings;
 import android.util.Log;
 
-import androidx.annotation.Keep;
-
 import com.android.settings.bluetooth.BluetoothSliceBuilder;
 import com.android.settings.notification.ZenModeSliceBuilder;
 import com.android.settings.overlay.FeatureFactory;
@@ -89,14 +87,6 @@ public class SliceDeepLinkSpringBoard extends Activity {
         }
     }
 
-    @Keep
-    public static Uri createDeepLink(String s) {
-        return new Uri.Builder().scheme(SETTINGS)
-                .authority(SettingsSliceProvider.SLICE_AUTHORITY)
-                .appendQueryParameter(INTENT, s)
-                .build();
-    }
-
     public static Intent parse(Uri uri, String pkg) throws URISyntaxException {
         Intent intent = Intent.parseUri(uri.getQueryParameter(INTENT),
                 Intent.URI_ANDROID_APP_SCHEME);