Adapt default window size to larger window borders.

Also remove old compat settings reading code.

Change-Id: I460322e4ee5167f98ee2c2f258cee956c70e1612
Reviewed-by: Thomas Hartmann <Thomas.Hartmann@nokia.com>

src/plugins/coreplugin/mainwindow.cpp

@@ -1203,27 +1203,10 @@ void MainWindow::readSettings()
                                   QColor(Utils::StyleHelper::DEFAULT_BASE_COLOR)).value<QColor>());
     }
 
-    // TODO compat for <= 2.1, remove later
-    if (m_settings->contains(QLatin1String(geometryKey))) {
-        const QVariant geom = m_settings->value(QLatin1String(geometryKey));
-        if (geom.isValid()) {
-            setGeometry(geom.toRect());
-        } else {
-            resize(1024, 700);
-        }
-        if (m_settings->value(QLatin1String(maxKey), false).toBool())
-            setWindowState(Qt::WindowMaximized);
-        setFullScreen(m_settings->value(QLatin1String(fullScreenKey), false).toBool());
-
-        m_settings->remove(QLatin1String(geometryKey));
-        m_settings->remove(QLatin1String(maxKey));
-        m_settings->remove(QLatin1String(fullScreenKey));
-    } else {
-        if (!restoreGeometry(m_settings->value(QLatin1String(windowGeometryKey)).toByteArray())) {
-            resize(1024, 700);
-        }
-        restoreState(m_settings->value(QLatin1String(windowStateKey)).toByteArray());
+    if (!restoreGeometry(m_settings->value(QLatin1String(windowGeometryKey)).toByteArray())) {
+        resize(1008, 700); // size without window decoration
     }
+    restoreState(m_settings->value(QLatin1String(windowStateKey)).toByteArray());
 
     m_settings->endGroup();