Delete count-only

Author: titsuki

doc/Type/Iterator.pod6

@@ -121,18 +121,6 @@ return C<True> here, for example C<(1..6).roll(*)>.
     say (1 .. 100).is-lazy; # False
     say (1 .. Inf).is-lazy; # True
 
-=head2 method count-only
-
-Defined as:
-
-    method count-only(Iterator:D:) returns int
-
-Produces and discards all elements until it returns the end of the iteration,
-and returns the number of elements produced. This is useful to reduce memory
-usage in scenarios such as C<open($file).lines.elems>.
-
-    say (1 .. 1000).iterator.count-only; # 1000
-
 =head2 method sink-all
 
 Defined as: