Designer.cshtml

<script type="text/javascript">
    function OnBeforeRender(event) {
        delete DevExpress.Reporting.Designer.Widgets.reportFunctionDisplay[1].items["LocalDateTimeThisYear"];
    }
</script>

@{
    var designerRender = Html.DevExpress().ReportDesigner("reportDesigner")
        .Height("100%")
        .ClientSideEvents(configure => configure.BeforeRender("OnBeforeRender"))
        .Bind(Model.ReportDesignerModel);
    @designerRender.RenderHtml()
}

@section Scripts {
    <link href="~/css/dx-reporting-skeleton-screen.css" rel="stylesheet" />
    <link rel="stylesheet" href="~/css/viewer.part.bundle.css" />
    <link rel="stylesheet" href="~/css/designer.part.bundle.css" />
    <link rel="stylesheet" href="~/css/ace/ace.bundle.css" />
    <link rel="stylesheet" href="~/css/dx.material.blue.light.bundle.css" />

    <script src="~/js/reporting.thirdparty.bundle.js"></script>
    <script src="~/js/viewer.part.bundle.js"></script>
    <script src="~/js/designer.part.bundle.js"></script>

    @designerRender.RenderScripts()
}