remove Observation support from SwiftOCA

Author: lhoward

Sources/SwiftOCA/OCC/ControlClasses/Root.swift

@@ -21,10 +21,7 @@ import FoundationEssentials
 import Foundation
 #endif
 
-open class OcaRoot: CustomStringConvertible, @unchecked
-Sendable,
-  _OcaObjectKeyPathRepresentable, Observable
-{
+open class OcaRoot: CustomStringConvertible, @unchecked Sendable, _OcaObjectKeyPathRepresentable {
   typealias Root = OcaRoot
 
   public internal(set) weak var connectionDelegate: Ocp1Connection?

Sources/SwiftOCA/OCP.1/Ocp1Connection.swift

@@ -206,12 +206,8 @@ public struct Ocp1ConnectionStatistics: Sendable, CustomStringConvertible {
 
 private let CommandHandleBase = OcaUint32(100)
 
-#if !canImport(Darwin)
-protocol Observable {}
-#endif
-
 @OcaConnection
-open class Ocp1Connection: Observable, CustomStringConvertible {
+open class Ocp1Connection: CustomStringConvertible {
   package nonisolated static let MinimumPduSize = 1 /* SyncVal */ + Ocp1Header.HeaderSize
 
   public internal(set) var options: Ocp1ConnectionOptions