ApplicationLauncher: remove unused bringToForeground()

Surprisingly, it was also unimplemented.

Change-Id: I7845d321fd11c34cf70c944000657d9f782f0a5e
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: hjk <hjk@qt.io>

src/plugins/projectexplorer/applicationlauncher.cpp

@@ -83,7 +83,6 @@ public:
     void cannotRetrieveLocalDebugOutput();
     void checkLocalDebugOutput(qint64 pid, const QString &message);
     void localProcessDone(int, QProcess::ExitStatus);
-    void bringToForeground();
     qint64 applicationPID() const;
     bool isRunning() const;
 

src/plugins/projectexplorer/applicationlauncher.h

@@ -64,7 +64,6 @@ public:
 
     QString errorString() const;
     QProcess::ProcessError processError() const;
-    void bringToForeground();
 
     static QString msgWinCannotRetrieveDebuggingOutput();