diff --git a/orx-kdtree/src/demo/kotlin/DemoKNearestNeighbour01.kt b/orx-kdtree/src/demo/kotlin/DemoKNearestNeighbour01.kt
index bd5c30ba2..4fbc44d79 100644
--- a/orx-kdtree/src/demo/kotlin/DemoKNearestNeighbour01.kt
+++ b/orx-kdtree/src/demo/kotlin/DemoKNearestNeighbour01.kt
@@ -1,9 +1,6 @@
 import org.openrndr.application
 import org.openrndr.color.ColorRGBa
-import org.openrndr.extra.kdtree.buildKDTree
-import org.openrndr.extra.kdtree.findKNearest
 import org.openrndr.extra.kdtree.kdTree
-import org.openrndr.extra.kdtree.vector2Mapper
 import org.openrndr.math.Vector2
 import org.openrndr.shape.LineSegment
 
diff --git a/orx-kdtree/src/main/kotlin/KDTree.kt b/orx-kdtree/src/main/kotlin/KDTree.kt
index 830305a47..68338dbb6 100644
--- a/orx-kdtree/src/main/kotlin/KDTree.kt
+++ b/orx-kdtree/src/main/kotlin/KDTree.kt
@@ -102,7 +102,6 @@ private fun <T> insertItem(root: KDTreeNode<T>, item: T): KDTreeNode<T> {
 fun <T> buildKDTree(items: MutableList<T>, dimensions: Int, mapper: (T, Int) -> Double): KDTreeNode<T> {
     val root = KDTreeNode<T>(dimensions, mapper)
 
-    val start = System.currentTimeMillis()
     fun <T> buildTreeTask(
         scope: CoroutineScope,
         node: KDTreeNode<T>,
@@ -172,7 +171,6 @@ fun <T> buildKDTree(items: MutableList<T>, dimensions: Int, mapper: (T, Int) ->
     runBlocking {
         job.join()
     }
-    println("building took ${System.currentTimeMillis() - start}ms")
     return root
 }