LibWeb: Remove unused append_with_space etc functions from DOM::Node

This change removes the append_without_space, append_with_space,
prepend_without_space, and prepend_with_space functions from DOM::Node.

All those methods were added with the initial “Implement Accessible Name
and Description Calculation” commit in da5c918 and were only used in the
code related to accessible-name computation. But subsequent changes to
that code have removed all the calls to those functions — so now they’re
all completely unused.

Libraries/LibWeb/DOM/Node.cpp

@@ -2472,62 +2472,6 @@ Optional<StringView> Node::first_valid_id(StringView value, Document const& docu
     return {};
 }
 
-// https://www.w3.org/TR/accname-1.2/#mapping_additional_nd_te
-ErrorOr<void> Node::append_without_space(StringBuilder x, StringView const& result)
-{
-    // - If X is empty, copy the result to X.
-    // - If X is non-empty, copy the result to the end of X.
-    TRY(x.try_append(result));
-    return {};
-}
-
-// https://www.w3.org/TR/accname-1.2/#mapping_additional_nd_te
-ErrorOr<void> Node::append_with_space(StringBuilder x, StringView const& result)
-{
-    // - If X is empty, copy the result to X.
-    if (x.is_empty()) {
-        TRY(x.try_append(result));
-    } else {
-        // - If X is non-empty, add a space to the end of X and then copy the result to X after the space.
-        TRY(x.try_append(" "sv));
-        TRY(x.try_append(result));
-    }
-    return {};
-}
-
-// https://www.w3.org/TR/accname-1.2/#mapping_additional_nd_te
-ErrorOr<void> Node::prepend_without_space(StringBuilder x, StringView const& result)
-{
-    // - If X is empty, copy the result to X.
-    if (x.is_empty()) {
-        x.append(result);
-    } else {
-        // - If X is non-empty, copy the result to the start of X.
-        auto temp = TRY(x.to_string());
-        x.clear();
-        TRY(x.try_append(result));
-        TRY(x.try_append(temp));
-    }
-    return {};
-}
-
-// https://www.w3.org/TR/accname-1.2/#mapping_additional_nd_te
-ErrorOr<void> Node::prepend_with_space(StringBuilder x, StringView const& result)
-{
-    // - If X is empty, copy the result to X.
-    if (x.is_empty()) {
-        TRY(x.try_append(result));
-    } else {
-        // - If X is non-empty, copy the result to the start of X, and add a space after the copy.
-        auto temp = TRY(x.to_string());
-        x.clear();
-        TRY(x.try_append(result));
-        TRY(x.try_append(" "sv));
-        TRY(x.try_append(temp));
-    }
-    return {};
-}
-
 void Node::add_registered_observer(RegisteredObserver& registered_observer)
 {
     if (!m_registered_observer_list)

Libraries/LibWeb/DOM/Node.h

@@ -795,10 +795,6 @@ private:
     void remove_child_impl(JS::NonnullGCPtr<Node>);
 
     static Optional<StringView> first_valid_id(StringView, Document const&);
-    static ErrorOr<void> append_without_space(StringBuilder, StringView const&);
-    static ErrorOr<void> append_with_space(StringBuilder, StringView const&);
-    static ErrorOr<void> prepend_without_space(StringBuilder, StringView const&);
-    static ErrorOr<void> prepend_with_space(StringBuilder, StringView const&);
 
     JS::GCPtr<Node> m_parent;
     JS::GCPtr<Node> m_first_child;