removed duplicate token.

diff --git a/lib/ASN1.y b/lib/ASN1.y
index b335cbc..6dbc2b7 100644 (file)
--- a/lib/ASN1.y
+++ b/lib/ASN1.y
@@ -78,7 +78,6 @@ static int _asn1_yylex(void);
 %token UNIVERSAL
 %token PRIVATE
 %token APPLICATION
-%token OPTIONAL
 %token DEFAULT
 %token CHOICE
 %token OF