Clean up AST node and regenerate VM

Co-Authored-By: Gemini <noreply@google.com>

Author: php-generics

Zend/zend_ast.h

@@ -171,9 +171,6 @@ enum _zend_ast_kind {
 	ZEND_AST_PROP_GROUP,
 	ZEND_AST_CONST_ELEM,
 	ZEND_AST_CLASS_CONST_GROUP,
-
-	// Pseudo node for initializing enums
-	ZEND_AST_CONST_ENUM_INIT,
 	ZEND_AST_GENERIC_PARAM,       /* child[0]=name(ZVAL), child[1]=constraint or NULL, child[2]=default_type or NULL */
 
 	/* 4 child nodes */