remove redundant dependency

Author: rfindler

drracket-tool-text-lib/info.rkt

@@ -5,7 +5,6 @@
 (define deps '(["base" #:version "6.2.900.10"]
                "scribble-lib"
                ["string-constants-lib" #:version "1.12"]
-               "scribble-lib"
                "racket-index"))
 (define build-deps '("at-exp-lib"
                      "rackunit-lib"))