[cleanup] Remove redundant block_scope argument from DeclareClassVariable

src/parsing/preparser.h

Index: src/parsing/preparser.h
diff --git a/src/parsing/preparser.h b/src/parsing/preparser.h
index 9291578dbce579f580b9b1004ac7b56d4856a125..72659c2b63ce3c3b4a3c841e9a6e62e23b2f931a 100644
--- a/src/parsing/preparser.h
+++ b/src/parsing/preparser.h
@@ -1138,7 +1138,7 @@ class PreParser : public ParserBase<PreParser> {
     return PreParserStatement::Default();
   }
   V8_INLINE void DeclareClassVariable(PreParserIdentifier name,
-                                      Scope* block_scope, ClassInfo* class_info,
+                                      ClassInfo* class_info,
                                       int class_token_pos, bool* ok) {}
   V8_INLINE void DeclareClassProperty(PreParserIdentifier class_name,
                                       PreParserExpression property,