Use new static ICore interface.

Change-Id: I9b690d9b150c8d162b15370f9f8986267c9128f1
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>

src/plugins/remotelinux/startgdbserverdialog.cpp

@@ -112,7 +112,7 @@ public:
 StartGdbServerDialogPrivate::StartGdbServerDialogPrivate(StartGdbServerDialog *q)
     : q(q), processList(0)
 {
-    settings = ICore::instance()->settings();
+    settings = ICore::settings();
 
     deviceComboBox = new QComboBox(q);