Autotools: Use Qt5 style connects

* Get rid of "slots" from the headers

Change-Id: Ie12f5705a2ca92a431992a45f57193a72ea7032a
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/autotoolsprojectmanager/configurestep.h

@@ -96,7 +96,6 @@ public:
     QString additionalArguments() const;
     QVariantMap toMap() const override;
 
-public slots:
     void setAdditionalArguments(const QString &list);
     void notifyBuildDirectoryChanged();
 
@@ -135,10 +134,9 @@ public:
     QString displayName() const override;
     QString summaryText() const override;
 
-private slots:
+private:
     void updateDetails();
 
-private:
     ConfigureStep *m_configureStep;
     QString m_summaryText;
     QLineEdit *m_additionalArguments;