[nomaster] Revert "SI-5017 Poor performance of :+ operator on Arrays"

This reverts commit 02b2da63409af6a28824cbb74d00d0ec04518c8d.

1 files changed, 0 insertions, 14 deletions

diff --git a/src/library/scala/collection/mutable/ArrayOps.scala b/src/library/scala/collection/mutable/ArrayOps.scala
index 6b778b26f5..bb938a7aeb 100644
--- a/src/library/scala/collection/mutable/ArrayOps.scala
+++ b/src/library/scala/collection/mutable/ArrayOps.scala
@@ -52,20 +52,6 @@ trait ArrayOps[T] extends Any with ArrayLike[T, Array[T]] with CustomParalleliza
       super.toArray[U]
   }
 
-  def :+[B >: T: scala.reflect.ClassTag](elem: B): Array[B] = {
-    val result = Array.ofDim[B](repr.length + 1)
-    Array.copy(repr, 0, result, 0, repr.length)
-    result(repr.length) = elem
-    result
-  }
-
-  def +:[B >: T: scala.reflect.ClassTag](elem: B): Array[B] = {
-    val result = Array.ofDim[B](repr.length + 1)
-    result(0) = elem
-    Array.copy(repr, 0, result, 1, repr.length)
-    result
-  }
-
   override def par = ParArray.handoff(repr)
 
   /** Flattens a two-dimensional array by concatenating all its rows