fixup! Deprecate ActionProtocol for swift(>=3.1)

Sources/Action.swift

@@ -207,7 +207,7 @@ private struct ActionState {
 }
 
 /// A protocol used to constraint `Action` initializers.
-@available(swift, deprecated: 3.1)
+@available(swift, deprecated: 3.1, message: "This protocol is no longer necessary and will be removed in a future release of ReactiveSwift. Use Action directly instead.")
 public protocol ActionProtocol {
 	/// The type of argument to apply the action to.
 	associatedtype Input
@@ -272,37 +272,6 @@ extension Action: ActionProtocol {
 	}
 }
 
-#if swift(>=3.1)
-extension Action where Input == Void {
-	/// Initializes an action that uses an `Optional` property for its input,
-	/// and is disabled whenever the input is `nil`. When executed, a `SignalProducer`
-	/// is created with the current value of the input.
-	///
-	/// - parameters:
-	///   - input: An `Optional` property whose current value is used as input
-	///            whenever the action is executed. The action is disabled
-	///            whenever the value is `nil`.
-	///   - execute: A closure to return a new `SignalProducer` based on the
-	///              current value of `input`.
-	public convenience init<P: PropertyProtocol, T>(input: P, _ execute: @escaping (T) -> SignalProducer<Output, Error>) where P.Value == T? {
-		self.init(state: input, enabledIf: { $0 != nil }) { input, _ in
-			execute(input!)
-		}
-	}
-
-	/// Initializes an action that uses a property for its input. When executed,
-	/// a `SignalProducer` is created with the current value of the input.
-	///
-	/// - parameters:
-	///   - input: A property whose current value is used as input
-	///            whenever the action is executed.
-	///   - execute: A closure to return a new `SignalProducer` based on the
-	///              current value of `input`.
-	public convenience init<P: PropertyProtocol, T>(input: P, _ execute: @escaping (T) -> SignalProducer<Output, Error>) where P.Value == T {
-		self.init(input: input.map(Optional.some), execute)
-	}
-}
-#else
 extension ActionProtocol where Input == Void {
 	/// Initializes an action that uses an `Optional` property for its input,
 	/// and is disabled whenever the input is `nil`. When executed, a `SignalProducer`
@@ -332,7 +301,6 @@ extension ActionProtocol where Input == Void {
 		self.init(input: input.map(Optional.some), execute)
 	}
 }
-#endif
 
 /// The type of error that can occur from Action.apply, where `Error` is the
 /// type of error that can be generated by the specific Action instance.