Eliminate copy_when's vestigal implementation.

Reported by Erich Elsen

--HG--
branch : 1.4.0

Author: jaredhoberock

.LATEST_P4_CHANGELIST

@@ -1 +1 @@
-8815952
+9566133

thrust/copy.h

@@ -173,7 +173,6 @@ template<typename InputIterator, typename Size, typename OutputIterator>
  *  // result is now {-2, 0, 0, 2}
  *  \endcode
  *
- *  \see \c copy_when
  *  \see \c remove_copy_if
  */
 template<typename InputIterator,
@@ -234,7 +233,6 @@ template<typename InputIterator,
  *  // result is now     { 0, 1,  3, 5}
  *  \endcode
  *
- *  \see \c copy_when
  *  \see \c remove_copy_if
  */
 template<typename InputIterator1,

thrust/detail/copy.inl

@@ -68,38 +68,6 @@ template<typename InputIterator,
 }
 
 
-///////////////
-// copy_when //
-///////////////
-
-template<typename InputIterator,
-         typename PredicateIterator,
-         typename OutputIterator>
-  OutputIterator copy_when(InputIterator first,
-                           InputIterator last,
-                           PredicateIterator stencil,
-                           OutputIterator result)
-{
-    // default predicate is identity
-    typedef typename thrust::iterator_traits<PredicateIterator>::value_type StencilType;
-    return thrust::copy_when(first, last, stencil, result, thrust::identity<StencilType>());
-}
-
-template<typename InputIterator,
-         typename PredicateIterator,
-         typename OutputIterator,
-         typename Predicate>
-  OutputIterator copy_when(InputIterator first,
-                           InputIterator last,
-                           PredicateIterator stencil,
-                           OutputIterator result,
-                           Predicate pred)
-{
-    typedef typename thrust::iterator_traits<InputIterator>::value_type InputType;
-    return thrust::transform_if(first, last, stencil, result, thrust::identity<InputType>(), pred);
-}
-
-
 /////////////
 // copy_if //
 /////////////