Ladybird: Remove unused LoadType parameter from Tab::navigate

The only non-default use of this parameter was removed in 980e7164fe.

Ladybird/Qt/Tab.cpp

@@ -517,14 +517,13 @@ void Tab::focus_location_editor()
     m_location_edit->selectAll();
 }
 
-void Tab::navigate(QString url_qstring, LoadType load_type)
+void Tab::navigate(QString url_qstring)
 {
     auto url_string = ak_deprecated_string_from_qstring(url_qstring);
     if (url_string.starts_with('/'))
         url_string = DeprecatedString::formatted("file://{}", url_string);
     else if (URL url = url_string; !url.is_valid())
         url_string = DeprecatedString::formatted("https://{}", url_string);
-    m_is_history_navigation = (load_type == LoadType::HistoryNavigation);
     view().load(url_string);
 }
 

Ladybird/Qt/Tab.h

@@ -32,11 +32,7 @@ public:
 
     WebContentView& view() { return *m_view; }
 
-    enum class LoadType {
-        Normal,
-        HistoryNavigation,
-    };
-    void navigate(QString, LoadType = LoadType::Normal);
+    void navigate(QString);
     void back();
     void forward();
     void reload();