Simplify authentication logic

matrix.org now supports MAS so we don't need the web registration helper anymore.

ElementX/Sources/Services/Client/Client.swift

@@ -1,32 +0,0 @@
-//
-// Copyright 2024 New Vector Ltd.
-//
-// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial
-// Please see LICENSE files in the repository root for full details.
-//
-
-import Foundation
-import MatrixRustSDK
-
-extension ClientProtocol {
-    func getElementWellKnown() async -> Result<MatrixRustSDK.ElementWellKnown, ClientProxyError> {
-        do {
-            let serverName = if let userIDServerName = try? userIdServerName() {
-                "https://\(userIDServerName)"
-            } else {
-                server()
-            }
-            
-            guard let serverName,
-                  let url = URL(string: serverName)?.appending(path: "/.well-known/element/element.json") else {
-                return .failure(.invalidServerName)
-            }
-            
-            let response = try await getUrl(url: url.absoluteString)
-            let wellKnown = try makeElementWellKnown(string: response)
-            return .success(wellKnown)
-        } catch {
-            return .failure(.sdkError(error))
-        }
-    }
-}