remove `define-wish' from BSL for now

Merge to 5.1.1

collects/lang/htdp-beginner.rkt

@@ -40,7 +40,7 @@
            check-error
            check-member-of
            check-range
-           define-wish
+           ;; define-wish
 	   #%datum
            #%top-interaction
 	   empty true false

collects/scribblings/htdp-langs/beginner.scrbl

@@ -111,7 +111,7 @@ extraction, and type-like queries:
 The created names must not be the same as a primitive or another defined name.}
 
 @; ----------------------------------------------------------------------
-
+@;{   ------- COMMENTED OUT FOR NOW ---------
 @section{@scheme[define-wish]}
 
 @defform[(define-wish id)]{                           
@@ -127,7 +127,7 @@ Wished-for functions are reported in the test report for the current program.}
 Similar to the above form, defines a wished-for function named @racket[id]. If the 
 wished-for function is called with one value, the result of @scheme[expr] is
 returned as the default value. }
-
+}
 @; ----------------------------------------------------------------------
 
 @section[#:tag "beginner-call"]{Function Calls}