remove section on enclose-array

* doc/ref/api-compound.texi (Array Procedures): Remove section on
  `enclose-array', as it doesn't exist any more.

doc/ref/api-compound.texi

@@ -1492,45 +1492,6 @@ a @result{} #2((#f #f) (#f #t))
 @end example
 @end deffn
 
-@deffn {Scheme Procedure} enclose-array array dim1 @dots{}
-@deffnx {C Function} scm_enclose_array (array, dimlist)
-@var{dim1}, @var{dim2} @dots{} should be nonnegative integers less than
-the rank of @var{array}.  @code{enclose-array} returns an array
-resembling an array of shared arrays.  The dimensions of each shared
-array are the same as the @var{dim}th dimensions of the original array,
-the dimensions of the outer array are the same as those of the original
-array that did not match a @var{dim}.
-
-An enclosed array is not a general Scheme array.  Its elements may not
-be set using @code{array-set!}.  Two references to the same element of
-an enclosed array will be @code{equal?} but will not in general be
-@code{eq?}.  The value returned by @code{array-prototype} when given an
-enclosed array is unspecified.
-
-For example,
-
-@lisp
-(enclose-array '#3(((a b c)
-                    (d e f))
-                   ((1 2 3)
-                    (4 5 6)))
-               1)
-@result{}
-#<enclosed-array (#1(a d) #1(b e) #1(c f))
-                 (#1(1 4) #1(2 5) #1(3 6))>
-
-(enclose-array '#3(((a b c)
-                    (d e f))
-                   ((1 2 3)
-                    (4 5 6)))
-               1 0)
-@result{}
-#<enclosed-array #2((a 1) (d 4))
-                 #2((b 2) (e 5))
-                 #2((c 3) (f 6))>
-@end lisp
-@end deffn
-
 @deffn {Scheme Procedure} array-shape array
 @deffnx {Scheme Procedure} array-dimensions array
 @deffnx {C Function} scm_array_dimensions (array)