kconfig: remove dummy assignments to cur_{filename,lineno}

Since commit ca4c74ba ("kconfig: remove P_CHOICE property"),
menu_finalize() no longer calls menu_add_symbol(). No function
references cur_filename or cur_lineno after yyparse().
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>

scripts/kconfig/parser.y

@@ -530,14 +530,6 @@ void conf_parse(const char *name)
 		yydebug = 1;
 	yyparse();
 
-	/*
-	 * FIXME:
-	 * cur_filename and cur_lineno are used even after yyparse();
-	 * menu_finalize() calls menu_add_symbol(). This should be fixed.
-	 */
-	cur_filename = "<none>";
-	cur_lineno = 0;
-
 	str_printf(&autoconf_cmd,
 		   "\n"
 		   "$(autoconfig): $(deps_config)\n"