[S32::Containers] Dropped the :replace argument to .grab and .grabpairs.

$bag.grab(5, :replace) is better written as $bag.pick(5, :replace).

S32-setting-library/Containers.pod

@@ -1033,10 +1033,10 @@ to false.
 
 =item grab
 
- our multi method grab ( $bag: Int $num = 1, Bool :$replace )
- our multi method grab ( $bag: Whatever, Bool :$replace )
- our multi method grabpairs ( $bag: Int $num = 1, Bool :$replace )
- our multi method grabpairs ( $bag: Whatever, Bool :$replace )
+ our multi method grab ( $bag: Int $num = 1 )
+ our multi method grab ( $bag: Whatever )
+ our multi method grabpairs ( $bag: Int $num = 1 )
+ our multi method grabpairs ( $bag: Whatever )
 
 Like C<pick>, a C<grab> returns a random selection of elements, weighted
 by the values corresponding to each key.
@@ -1045,7 +1045,7 @@ works directly on the C<KeyHash>, modifying it in place.  (You may use
 C<.pick> to treat the C<KeyHash> as immutable; this will copy it and grab
 only from the temporary copy.)
 
-Swiping without replacement (the default) decrements the grabbed
+Grabbing decrements the grabbed
 key's replication value by one (deleting the key when it goes to 0).
 By definition, C<.elems> of the bag also decreases by one, so the
 probabilities stay consistent through subsequent grab operations.