Hotfix build error on watchOS

Lib/KeychainAccess/Keychain.swift

@@ -138,7 +138,6 @@ public struct AuthenticationPolicy : OptionSetType {
     even if fingers are added or removed.
     */
     @available(iOS 8.0, OSX 10.10, *)
-    @available(watchOS, unavailable)
     public static let UserPresence = AuthenticationPolicy(rawValue: 1 << 0)
 
     /**
@@ -148,7 +147,6 @@ public struct AuthenticationPolicy : OptionSetType {
     */
     @available(iOS 9.0, *)
     @available(OSX, unavailable)
-    @available(watchOS, unavailable)
     public static let TouchIDAny = AuthenticationPolicy(rawValue: 1 << 1)
 
     /**
@@ -158,14 +156,12 @@ public struct AuthenticationPolicy : OptionSetType {
     */
     @available(iOS 9.0, *)
     @available(OSX, unavailable)
-    @available(watchOS, unavailable)
     public static let TouchIDCurrentSet = AuthenticationPolicy(rawValue: 1 << 3)
 
     /**
     Constraint: Device passcode
     */
     @available(iOS 9.0, OSX 10.11, *)
-    @available(watchOS, unavailable)
     public static let DevicePasscode = AuthenticationPolicy(rawValue: 1 << 4)
 
     /**
@@ -174,7 +170,6 @@ public struct AuthenticationPolicy : OptionSetType {
     */
     @available(iOS 9.0, *)
     @available(OSX, unavailable)
-    @available(watchOS, unavailable)
     public static let Or = AuthenticationPolicy(rawValue: 1 << 14)
 
     /**
@@ -183,7 +178,6 @@ public struct AuthenticationPolicy : OptionSetType {
     */
     @available(iOS 9.0, *)
     @available(OSX, unavailable)
-    @available(watchOS, unavailable)
     public static let And = AuthenticationPolicy(rawValue: 1 << 15)
 
     /**
@@ -191,7 +185,6 @@ public struct AuthenticationPolicy : OptionSetType {
     */
     @available(iOS 9.0, *)
     @available(OSX, unavailable)
-    @available(watchOS, unavailable)
     public static let PrivateKeyUsage = AuthenticationPolicy(rawValue: 1 << 30)
 
     /**
@@ -200,7 +193,6 @@ public struct AuthenticationPolicy : OptionSetType {
     */
     @available(iOS 9.0, *)
     @available(OSX, unavailable)
-    @available(watchOS, unavailable)
     public static let ApplicationPassword = AuthenticationPolicy(rawValue: 1 << 31)
 
     public let rawValue : Int
@@ -246,7 +238,6 @@ private let ValueData = kSecValueData as String
 
 /** Other Constants */
 @available(iOS 8.0, OSX 10.10, *)
-@available(watchOS, unavailable)
 private let UseOperationPrompt = kSecUseOperationPrompt as String
 
 #if os(iOS)
@@ -255,23 +246,18 @@ private let UseNoAuthenticationUI = kSecUseNoAuthenticationUI as String
 #endif
 
 @available(iOS 9.0, OSX 10.11, *)
-@available(watchOS, unavailable)
 private let UseAuthenticationUI = kSecUseAuthenticationUI as String
 
 @available(iOS 9.0, OSX 10.11, *)
-@available(watchOS, unavailable)
 private let UseAuthenticationContext = kSecUseAuthenticationContext as String
 
 @available(iOS 9.0, OSX 10.11, *)
-@available(watchOS, unavailable)
 private let UseAuthenticationUIAllow = kSecUseAuthenticationUIAllow as String
 
 @available(iOS 9.0, OSX 10.11, *)
-@available(watchOS, unavailable)
 private let UseAuthenticationUIFail = kSecUseAuthenticationUIFail as String
 
 @available(iOS 9.0, OSX 10.11, *)
-@available(watchOS, unavailable)
 private let UseAuthenticationUISkip = kSecUseAuthenticationUISkip as String
 
 #if os(iOS)
@@ -309,7 +295,6 @@ public class Keychain {
     }
 
     @available(iOS 8.0, OSX 10.10, *)
-    @available(watchOS, unavailable)
     public var authenticationPolicy: AuthenticationPolicy? {
         return options.authenticationPolicy
     }
@@ -327,7 +312,6 @@ public class Keychain {
     }
 
     @available(iOS 8.0, OSX 10.10, *)
-    @available(watchOS, unavailable)
     public var authenticationPrompt: String? {
         return options.authenticationPrompt
     }
@@ -400,7 +384,6 @@ public class Keychain {
     }
 
     @available(iOS 8.0, OSX 10.10, *)
-    @available(watchOS, unavailable)
     public func accessibility(accessibility: Accessibility, authenticationPolicy: AuthenticationPolicy) -> Keychain {
         var options = self.options
         options.accessibility = accessibility
@@ -427,7 +410,6 @@ public class Keychain {
     }
 
     @available(iOS 8.0, OSX 10.10, *)
-    @available(watchOS, unavailable)
     public func authenticationPrompt(authenticationPrompt: String) -> Keychain {
         var options = self.options
         options.authenticationPrompt = authenticationPrompt
@@ -1011,13 +993,11 @@ extension Options {
             query[AttributeAuthenticationType] = authenticationType.rawValue
         }
 
-        #if !os(watchOS)
         if #available(iOS 8.0, OSX 10.10, *) {
             if authenticationPrompt != nil {
                 query[UseOperationPrompt] = authenticationPrompt
             }
         }
-        #endif
         
         return query
     }