feat: Remove unused code

TIKeychainUtils/Sources/KeychainAccess/Keychain+Factory.swift

@@ -1,18 +0,0 @@
-import Foundation
-import KeychainAccess
-
-extension Bundle {
-    var mirBundleId: String {
-        Bundle.main.bundleIdentifier ?? .empty
-    }
-}
-
-extension Keychain {
-    static var mirKeychain: Keychain {
-        .init(service: Bundle.main.mirBundleId)
-    }
-}
-
-private extension String {
-    static let empty = ""
-}