Update signature of RewardsService external wallet methods

android/java/org/chromium/chrome/browser/BraveRewardsNativeWorker.java

@@ -377,9 +377,9 @@ public class BraveRewardsNativeWorker {
         }
     }
 
-    public void DisconnectWallet(String wallet_type) {
+    public void DisconnectWallet() {
         synchronized (lock) {
-            nativeDisconnectWallet(mNativeBraveRewardsNativeWorker, wallet_type);
+            nativeDisconnectWallet(mNativeBraveRewardsNativeWorker);
         }
     }
 
@@ -625,7 +625,7 @@ public class BraveRewardsNativeWorker {
     private native void nativeSetAdsPerHour(long nativeBraveRewardsNativeWorker, int value);
     private native boolean nativeIsAnonWallet(long nativeBraveRewardsNativeWorker);
     private native void nativeGetExternalWallet(long nativeBraveRewardsNativeWorker);
-    private native void nativeDisconnectWallet(long nativeBraveRewardsNativeWorker, String wallet_type);
+    private native void nativeDisconnectWallet(long nativeBraveRewardsNativeWorker);
     private native void nativeProcessRewardsPageUrl(long nativeBraveRewardsNativeWorker, String path, String query);
     private native void nativeRecoverWallet(long nativeBraveRewardsNativeWorker, String passPhrase);
     private native void nativeRefreshPublisher(long nativeBraveRewardsNativeWorker, String publisherKey);

android/java/org/chromium/chrome/browser/BraveRewardsUserWalletActivity.java

@@ -111,13 +111,12 @@ public class BraveRewardsUserWalletActivity extends AppCompatActivity {
     private void SetDisconnectBtnClickHandler() {
         Button btnDisconnect = (Button)findViewById(
                 R.id.user_wallet_disconnect);
-        btnDisconnect.setOnClickListener( (View v) -> {
-            BraveRewardsNativeWorker.getInstance().DisconnectWallet
-                    (BraveRewardsBalance.WALLET_UPHOLD);
+        btnDisconnect.setOnClickListener((View v) -> {
+            BraveRewardsNativeWorker.getInstance().DisconnectWallet();
             Intent intent = new Intent();
             setResult(RESULT_OK, intent);
             finish();
-      });
+        });
     }
 
     @Override