Fix wrong check

Parker messed up the logic that force it to be in text selection mode
to be on non text selecion mode when doing an unrelated change.

As the "bug" as showed we can selectAll in non text selection mode as well
so remove the check altogether

BUGS: 159276, 319554
FIXED-IN: 4.10.4

ui/pageview.cpp

@@ -807,9 +807,6 @@ void PageView::copyTextSelection() const
 
 void PageView::selectAll()
 {
-    if ( Okular::Settings::mouseMode() == Okular::Settings::EnumMouseMode::TextSelect )
-        return;
-
     QVector< PageViewItem * >::const_iterator it = d->items.constBegin(), itEnd = d->items.constEnd();
     for ( ; it < itEnd; ++it )
     {