wifi: use Passpoint API when forgetting a Passpoint network

Use WifiManager#removePasspointConfiguration when forgetting a
Passpoint network to remove the configuration.

This maintains the legacy behavior, where forgetting a Passpoint
network/AP will remove its provider's profile.

Bug: 34207710
Test: manual test
Change-Id: I8b7f6d9fb20fa9f0f0d90566f76c2a39308ce420

src/com/android/settings/wifi/WifiSettings.java

@@ -840,6 +840,8 @@ public class WifiSettings extends RestrictedSettingsFragment
                 Log.e(TAG, "Failed to forget invalid network " + mSelectedAccessPoint.getConfig());
                 return;
             }
+        } else if (mSelectedAccessPoint.getConfig().isPasspoint()) {
+            mWifiManager.removePasspointConfiguration(mSelectedAccessPoint.getConfig().FQDN);
         } else {
             mWifiManager.forget(mSelectedAccessPoint.getConfig().networkId, mForgetListener);
         }