diff --git a/packages/mermaid/src/diagrams/flowchart/parser/flow.jison b/packages/mermaid/src/diagrams/flowchart/parser/flow.jison
index 1f5050117..0219fec2d 100644
--- a/packages/mermaid/src/diagrams/flowchart/parser/flow.jison
+++ b/packages/mermaid/src/diagrams/flowchart/parser/flow.jison
@@ -609,7 +609,4 @@ direction
     { $$={stmt:'dir', value:'LR'};}
     ;
 
-alphaNumToken  : ALPHA_NUM | PUNCTUATION | AMP | UNICODE_TEXT | NUM| ALPHA | COLON | COMMA | PLUS | EQUALS | MULT | DOT | BRKT| UNDERSCORE ;
-
-graphCodeTokens: STADIUMSTART | STADIUMEND | SUBROUTINESTART | SUBROUTINEEND | VERTEX_WITH_PROPS_START | CYLINDERSTART | CYLINDEREND | TRAPSTART | TRAPEND | INVTRAPSTART | INVTRAPEND | PIPE | PS | PE | SQS | SQE | DIAMOND_START | DIAMOND_STOP | TAGSTART | TAGEND | ARROW_CROSS | ARROW_POINT | ARROW_CIRCLE | ARROW_OPEN | QUOTE | SEMI;
 %%