fix WithViewStore extension document (#2511)

- remove unused paramter(isDuplicate)

Co-authored-by: 강성규/연구/인포테인먼트소프트웨어개발팀 <seongkue.kang@hyundai.com>

Sources/ComposableArchitecture/SwiftUI/WithViewStore.swift

@@ -435,8 +435,6 @@ extension WithViewStore where ViewState: Equatable, Content: View {
   ///   - toViewState: A function that transforms store state into observable view state. All
   ///   changes to the view state will cause the `WithViewStore` to re-compute its view.
   ///   - fromViewAction: A function that transforms view actions into store action.
-  ///   - isDuplicate: A function to determine when two `ViewState` values are equal. When values
-  ///     are equal, repeat view computations are removed.
   ///   - content: A function that can generate content from a view store.
   public init<State, Action>(
     _ store: Store<State, Action>,
@@ -523,8 +521,6 @@ extension WithViewStore where ViewState: Equatable, Content: View {
   ///   - store: A store.
   ///   - toViewState: A function that transforms store state into observable view state. All
   ///   changes to the view state will cause the `WithViewStore` to re-compute its view.
-  ///   - isDuplicate: A function to determine when two `ViewState` values are equal. When values
-  ///     are equal, repeat view computations are removed.
   ///   - content: A function that can generate content from a view store.
   public init<State>(
     _ store: Store<State, ViewAction>,