gh-138279: Remove unused attr in RuleCollectorVisitor in parser_generator.py (#138280)

Author: chemelnucfin

Tools/peg_generator/pegen/parser_generator.py

@@ -44,8 +44,7 @@
 class RuleCollectorVisitor(GrammarVisitor):
     """Visitor that invokes a provided callmaker visitor with just the NamedItem nodes"""
 
-    def __init__(self, rules: Dict[str, Rule], callmakervisitor: GrammarVisitor) -> None:
-        self.rules = rules
+    def __init__(self, callmakervisitor: GrammarVisitor) -> None:
         self.callmaker = callmakervisitor
 
     def visit_Rule(self, rule: Rule) -> None:
@@ -163,7 +162,7 @@ def collect_rules(self) -> None:
         for rule in self.all_rules.values():
             keyword_collector.visit(rule)
 
-        rule_collector = RuleCollectorVisitor(self.rules, self.callmakervisitor)
+        rule_collector = RuleCollectorVisitor(self.callmakervisitor)
         done: Set[str] = set()
         while True:
             computed_rules = list(self.all_rules)