iOS: Use run arguments more directly

This also treats the arguments list as an arguments list for running,
not as a single argument.

Change-Id: Ia95e02c6324947081147b8bf8084cdd3a7d1eaf0
Reviewed-by: Vikas Pachdha <vikas.pachdha@qt.io>

src/plugins/ios/iosrunconfiguration.h

@@ -49,7 +49,6 @@ public:
     QWidget *createConfigurationWidget() override;
     IosDeployStep *deployStep() const;
 
-    QString commandLineArguments() const;
     Utils::FileName profilePath() const;
     QString applicationName() const;
     Utils::FileName bundleDirectory() const;