Remove unused code

Sources/ElixxirDAppsSDK/Legacy/NetworkHealthProvider.swift

-//import Bindings
-//
-//public struct NetworkHealthProvider {
-//  public var get: () -> Bool
-//
-//  public func callAsFunction() -> Bool {
-//    get()
-//  }
-//}
-//
-//extension NetworkHealthProvider {
-//  public static func live(bindingsClient: BindingsCmix) -> NetworkHealthProvider {
-//    NetworkHealthProvider(get: bindingsClient.isNetworkHealthy)
-//  }
-//}
-//
-//#if DEBUG
-//extension NetworkHealthProvider {
-//  public static let failing = NetworkHealthProvider {
-//    fatalError("Not implemented")
-//  }
-//}
-//#endif