remove old token retrieval schemes

src/Core/IdentityServer/TokenRetrieval.cs

@@ -1,42 +0,0 @@
-using Microsoft.AspNetCore.Http;
-using System;
-using System.Linq;
-
-namespace Bit.Core.IdentityServer
-{
-    public static class TokenRetrieval
-    {
-        public static Func<HttpRequest, string> FromAuthorizationHeaderOrQueryString(string[] authHeaderSchemes)
-        {
-            return (request) =>
-            {
-                var authorization = request.Headers["Authorization"].FirstOrDefault();
-
-                if(string.IsNullOrWhiteSpace(authorization))
-                {
-                    // Bearer token could exist in the 'Content-Language' header on clients that want to avoid pre-flights.
-                    var languageAuth = request.Headers["Content-Language"].FirstOrDefault();
-                    if(string.IsNullOrWhiteSpace(languageAuth) ||
-                        !languageAuth.StartsWith("Bearer ", StringComparison.OrdinalIgnoreCase))
-                    {
-                        return request.Query["access_token"].FirstOrDefault();
-                    }
-                    else
-                    {
-                        authorization = languageAuth.Split(',')[0];
-                    }
-                }
-
-                foreach(var headerScheme in authHeaderSchemes)
-                {
-                    if(authorization.StartsWith($"{headerScheme} ", StringComparison.OrdinalIgnoreCase))
-                    {
-                        return authorization.Substring(headerScheme.Length + 1).Trim();
-                    }
-                }
-
-                return null;
-            };
-        }
-    }
-}