Ssh: Use base QtcProcess' useTerminal for SshRemoteProcess

Still trying to ramp down non-QtcProcess interfaces.

Change-Id: I6b4ae6788f5021959ff3eb35bbade2157a6d67fa
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Cristian Adam <cristian.adam@qt.io>
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

src/libs/utils/qtcprocess.cpp

@@ -824,6 +824,11 @@ void QtcProcess::setUseTerminal(bool on)
     d->m_process->setUseTerminal(on);
 }
 
+bool QtcProcess::useTerminal() const
+{
+    return d->m_process->useTerminal();
+}
+
 void QtcProcess::setRunAsRoot(bool on)
 {
     d->m_process->setRunAsRoot(on);