Remove unused SshRemoteProcessRunner::writeDataToProcess()

Change-Id: Ib07c7c9cd19b498f84382d2c9c11b927533e4d85
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

src/libs/ssh/sshremoteprocessrunner.h

@@ -46,7 +46,6 @@ public:
     QString lastConnectionErrorString() const;
 
     bool isProcessRunning() const;
-    void writeDataToProcess(const QByteArray &data);
     void cancel();
     QProcess::ExitStatus processExitStatus() const;
     int processExitCode() const;