QtWidgets: Use remove instead of replace

This commit addresses on of the comments from the review of QTBUG-98434.

Use remove instead of replace to delete from the string.

Task-number: QTBUG-103100
Change-Id: Ifa00a9bae24767eb42d6fa5da0ffdbaa230d5d96
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

src/widgets/accessible/qaccessiblewidgets.cpp

@@ -398,7 +398,7 @@ QString QAccessibleMdiSubWindow::text(QAccessible::Text textType) const
 {
     if (textType == QAccessible::Name) {
         QString title = mdiSubWindow()->windowTitle();
-        title.replace("[*]"_L1, ""_L1);
+        title.remove("[*]"_L1);
         return title;
     }
     return QAccessibleWidget::text(textType);