Remove the documentation of deprecated dictionary implementation.

doc/modules.md

@@ -888,95 +888,6 @@ Within any of the ```body ...``` expressions the ```print-help```
 procedure can be used to print the options, their argument names and
 help strings in a nice, human-readable format.
 
-### Dictionary
-
-Simple key/value dictionary with most operations implemented in linear
-time. The dictionary is internally represented as ```assq``` list and
-is best suitable for symbols and numbers as keys.
-
-    (make-dict)
-
-Creates an empty dictionary.
-
-    (dict-has-key? d k)
-
-* ```d``` - the dictionary
-* ```k``` - key to check
-
-Returns ```#t``` (true) if the dictionary ```d``` contains the key
-```k```.
-
-    (dict-ref d k [v])
-
-* ```d``` - the dictionary
-* ```k``` - the key to retrieve
-* ```v``` - optional default value
-
-Retrieves given key ```k``` from the dictionary ```d```.
-
-If the key is not stored in the dictionary an error is raised unless
-an optional value ```v``` is provided which is then returned in that
-case.
-
-    (dict-remove d k)
-
-* ```d``` - the dictionary
-* ```k``` - the key to remove
-
-Removes the key ```k``` from the given dictionary ```d``` raising an
-exception if  the key is not stored in the dictionary.
-
-    (dict-set d k v)
-
-* ```d``` - the dictionary
-* ```k``` - key to (re)set
-* ```v``` - the value to set
-
-If the dictionary ```d``` does not contain the key ```k```, adds the
-value ```v``` into it under the given key. If the key is present, its
-value is then replaced.
-
-    (dict-keys d)
-
-* ```d``` - the dictionary
-
-Returns the list of keys contained in the dictionary ```d```.
-
-    (dict-map proc d)
-
-* ```proc``` - procedure for processing
-* ```d``` - the dictionary
-
-Returns a dictionary created by processing all elements of the
-dictionary ```d``` using the procedure ```proc```.
-
-If the procedure accepts just one argument, only values are passed to
-it. If the procedure accepts two arguments, both the key and value are
-passed to it. In both cases, the procedure must produce only the value.
-
-    (dict-filter pred? d)
-
-* ```pred?``` - predicate procedure
-* ```d``` - the dictionary
-
-Returns a new dictionary created by keeping only the key/value pairs
-from the dictionary ```d``` matching the predicate ```pred?```.
-
-If the procedure accepts just one argument, only values are passed to
-it. If the procedure accepts two arguments, both the key and value are
-passed to it.
-
-    (dict-reduce init proc d)
-
-* ```init``` - arbitrary initial value
-* ```proc``` - procedure for performing the reducing step
-* ```d``` - the dictionary to reduce
-
-Iterates over the key/value pairs of given dictionary ```d```
-initializing the algorithm with the ```init``` value given. In each
-step the procedure ```proc``` is called with three arguments: the
-value accumulated so far, key and value.
-
 ### Listing
 
 This module implements listing a text file with line numbers and