diff --git a/cura/PlatformPhysics.py b/cura/PlatformPhysics.py
index df841bd71d..ac14b93160 100644
--- a/cura/PlatformPhysics.py
+++ b/cura/PlatformPhysics.py
@@ -19,8 +19,6 @@ from . import PlatformPhysicsOperation
 from . import ConvexHullJob
 from . import ZOffsetDecorator
 
-import time
-import threading
 import copy
 
 class PlatformPhysics: