Remove outdated version checks

Author: chickdan

Xcodes/Frontend/Common/NavigationSplitViewWrapper.swift

@@ -20,29 +20,17 @@ struct NavigationSplitViewWrapper<Sidebar, Detail>: View where Sidebar: View, De
     }
 
     var body: some View {
-        if #available(iOS 16, macOS 13, tvOS 16, watchOS 9, visionOS 1, *) {
-            // Use the latest API available
-            NavigationSplitView {
-                
-                if #available(macOS 14, *) {
-                    sidebar
-                        .navigationSplitViewColumnWidth(min: 250, ideal: 300)
-                } else {
-                    sidebar
-                }
-            } detail: {
-                detail
-            }
-            .navigationSplitViewStyle(.balanced)
-        } else {
-            // Alternative code for earlier versions of OS.
-            NavigationView {
-                // The first column is the sidebar.
+        // Use the latest API available
+        NavigationSplitView {
+            if #available(macOS 14, *) {
+                sidebar
+                    .navigationSplitViewColumnWidth(min: 250, ideal: 300)
+            } else {
                 sidebar
-                    .frame(minWidth: 250)
-                detail
             }
-            .navigationViewStyle(.columns)
+        } detail: {
+            detail
         }
+        .navigationSplitViewStyle(.balanced)
     }
 }

Xcodes/Frontend/MainWindow.swift

@@ -55,11 +55,7 @@ struct MainWindow: View {
                         .help("PreferencesDescription")
                     } else {
                         Button(action: {
-                            if #available(macOS 13, *) {
-                                NSApp.sendAction(Selector(("showSettingsWindow:")), to: nil, from: nil)
-                            } else {
-                                NSApp.sendAction(Selector(("showPreferencesWindow:")), to: nil, from: nil)
-                            }
+                            NSApp.sendAction(Selector(("showSettingsWindow:")), to: nil, from: nil)
                         }, label: {
                             Label("Preferences", systemImage: "gearshape")
                         })

Xcodes/XcodesApp.swift

@@ -169,9 +169,5 @@ class AppDelegate: NSObject, NSApplicationDelegate {
 }
 
 func localizeString(_ key: String, comment: String = "") -> String {
-    if #available(macOS 12, *) {
-        return String(localized: String.LocalizationValue(key))
-    } else {
-        return NSLocalizedString(key, comment: comment)
-    }
+    return String(localized: String.LocalizationValue(key))
 }