accountadapter: reinstate accountRemoved signal for qml testing

Gitlab: #899
Change-Id: Id00f91996fe93279992a2aa8c5778de8a93dcdbc

src/app/accountadapter.cpp

@@ -256,7 +256,7 @@ AccountAdapter::deleteCurrentAccount()
     Utils::oneShotConnect(&lrcInstance_->accountModel(),
                           &lrc::api::AccountModel::accountRemoved,
                           [this](const QString& accountId) {
-                              Q_UNUSED(accountId);
+                              Q_EMIT accountRemoved(accountId);
                               Q_EMIT lrcInstance_->accountListChanged();
                           });
 

src/app/accountadapter.h

@@ -87,7 +87,8 @@ Q_SIGNALS:
     // Send report failure to QML to make it show the right UI state .
     void reportFailure();
     void accountCreationFailed();
-    void accountAdded(QString accountId, int index);
+    void accountAdded(const QString& accountId, int index);
+    void accountRemoved(const QString& accountId);
     void accountConfigFinalized();
 
 private: