QueryRunner: Connect to done() signal

Instead of connecting to errorOccurred() and finished() signals.

Change-Id: I57adabc52b38be6b22a4d7380e6fbaaae3192201
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/gitlab/queryrunner.h

@@ -62,24 +62,14 @@ class QueryRunner : public QObject
     Q_OBJECT
 public:
     QueryRunner(const Query &query, const Utils::Id &id, QObject *parent = nullptr);
-    ~QueryRunner();
-
     void start();
-    void terminate();
 
 signals:
     void finished();
     void resultRetrieved(const QByteArray &json);
 
 private:
-    void errorTermination(const QString &msg);
-    void processError(QProcess::ProcessError error);
-    void processFinished();
-
     Utils::QtcProcess m_process;
-    Utils::Id m_serverId;
-    bool m_running = false;
-    bool m_paginated = false;
 };
 
 } // namespace GitLab