Remove the share_pos developer option. (#4406)

ElementX/Sources/Screens/Settings/DeveloperOptionsScreen/DeveloperOptionsScreenModels.swift

@@ -51,7 +51,6 @@ protocol DeveloperOptionsProtocol: AnyObject {
     var publicSearchEnabled: Bool { get set }
     var fuzzyRoomListSearchEnabled: Bool { get set }
     var knockingEnabled: Bool { get set }
-    var sharePosEnabled: Bool { get set }
 }
 
 extension AppSettings: DeveloperOptionsProtocol { }

ElementX/Sources/Screens/Settings/DeveloperOptionsScreen/View/DeveloperOptionsScreen.swift

@@ -65,13 +65,6 @@ struct DeveloperOptionsScreen: View {
                 }
             }
             
-            Section("Sync") {
-                Toggle(isOn: $context.sharePosEnabled) {
-                    Text("Share pos")
-                    Text("Keep the sliding sync pos to make initial syncs faster. Requires an app restart to take effect. Might make the sync unstable.")
-                }
-            }
-            
             Section {
                 Toggle(isOn: $context.enableOnlySignedDeviceIsolationMode) {
                     Text("Exclude insecure devices when sending/receiving messages")