Remove unused functions

src/runtime/stack.c

@@ -341,20 +341,6 @@ unsigned ts_stack_error_depth(const Stack *self, StackVersion version) {
   return array_get(&self->heads, version)->node->error_depth;
 }
 
-size_t ts_stack_last_repaired_error_size(const Stack *self,
-                                         StackVersion version) {
-  StackNode *node = array_get(&self->heads, version)->node;
-  for (;;) {
-    if (node->link_count == 0)
-      break;
-    TSTree *tree = node->links[0].tree;
-    if (tree && tree->error_size > 0)
-      return ts_tree_last_error_size(tree);
-    node = node->links[0].node;
-  }
-  return 0;
-}
-
 bool ts_stack_push(Stack *self, StackVersion version, TSTree *tree,
                    bool is_pending, TSStateId state) {
   StackNode *node = array_get(&self->heads, version)->node;

src/runtime/tree.c

@@ -131,19 +131,6 @@ recur:
   }
 }
 
-size_t ts_tree_last_error_size(const TSTree *self) {
-  if (self->symbol == ts_builtin_sym_error)
-    return self->error_size;
-
-  for (size_t i = self->child_count - 1; i + 1 > 0; i--) {
-    size_t result = ts_tree_last_error_size(self->children[i]);
-    if (result > 0)
-      return result;
-  }
-
-  return 0;
-}
-
 void ts_tree_set_children(TSTree *self, size_t child_count, TSTree **children) {
   if (self->child_count > 0)
     ts_free(self->children);

src/runtime/tree.h

@@ -66,7 +66,6 @@ void ts_tree_set_children(TSTree *, size_t, TSTree **);
 void ts_tree_assign_parents(TSTree *);
 void ts_tree_edit(TSTree *, TSInputEdit);
 char *ts_tree_string(const TSTree *, const TSLanguage *, bool include_all);
-size_t ts_tree_last_error_size(const TSTree *);
 
 static inline size_t ts_tree_total_chars(const TSTree *self) {
   return self->padding.chars + self->size.chars;