don't redefine delete-random

basis/heaps/authors.txt

@@ -1,2 +1,3 @@
 Doug Coleman
 Ryan Murphy
+Slava Pestov

basis/heaps/heaps-tests.factor

@@ -1,6 +1,5 @@
 ! Copyright 2007, 2008 Ryan Murphy, Slava Pestov
 ! See http://factorcode.org/license.txt for BSD license.
-
 USING: arrays kernel math namespaces tools.test
 heaps heaps.private math.parser random assocs sequences sorting
 accessors math.order ;
@@ -54,9 +53,6 @@ IN: heaps.tests
     [ t ] swap [ 2^ test-entry-indices ] curry unit-test
 ] each
 
-: delete-random ( seq -- elt )
-    dup length random dup pick nth >r swap delete-nth r> ;
-
 : sort-entries ( entries -- entries' )
     [ [ key>> ] compare ] sort ;