Removed LeftBraceSemicolon "{;" from Html/SyntaxColoring, having removed it from curry-base

src/Html/SyntaxColoring.hs

@@ -435,7 +435,6 @@ showToken (Token Comma              _) = ","
 showToken (Token Underscore         _) = "_"
 showToken (Token Backquote          _) = "`"
 showToken (Token VSemicolon         _) = ""
-showToken (Token LeftBraceSemicolon _) = "{;"
 showToken (Token VRightBrace        _) = ""
 showToken (Token At                 _) = "@"
 showToken (Token Colon              _) = ":"