LibWeb: Delete unused Range::normalized()

Author: https://github.com/kalenikaliaksandr
Commit: 481ab338b4
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5282
Reviewed-by: https://github.com/gmta ✅

Libraries/LibWeb/DOM/Range.h

@@ -58,7 +58,6 @@ public:
     WebIDL::ExceptionOr<WebIDL::Short> compare_boundary_points(WebIDL::UnsignedShort how, Range const& source_range) const;
 
     GC::Ref<Range> inverted() const;
-    GC::Ref<Range> normalized() const;
     GC::Ref<Range> clone_range() const;
 
     GC::Ref<Node> common_ancestor_container() const;