remvoe sanitzer from views and use extensions instead of keys

EnvelopeGenerator.Web/Views/_ViewImports.cshtml

@@ -6,9 +6,6 @@
 @using EnvelopeGenerator.Application.Resources
 @using Microsoft.Extensions.Options
 @inject IStringLocalizer<Resource> _localizer
-@inject System.Text.Encodings.Web.UrlEncoder _encoder
-@inject Ganss.Xss.HtmlSanitizer _sanitizer
-@inject HighlightHtmlSanitizer _hlSanitizer
 @inject Microsoft.AspNetCore.Http.IHttpContextAccessor _accessor
 @inject Cultures _cultures
 @inject IOptions<CustomImages> _cImgOpt