diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index d34ff1b..221ba98 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -1,10 +1,4 @@
 repos:
-  # isort for python imports
-  - repo: https://github.com/pycqa/isort
-    rev: 5.12.0
-    hooks:
-      - id: isort
-        name: isort (python)
   # black repo for python formatting
   - repo: https://github.com/ambv/black
     rev: 22.12.0
diff --git a/dronesim/envs/BaseAviary.py b/dronesim/envs/BaseAviary.py
index 2c71c6c..3d0f45a 100644
--- a/dronesim/envs/BaseAviary.py
+++ b/dronesim/envs/BaseAviary.py
@@ -1937,6 +1937,9 @@ def _addObstacles(self):
         These obstacles are loaded from standard URDF files included in Bullet.
 
         """
+        print(
+            "Adding obstacles from BaseAviary is not possible anymore. Please load them as URDF in the main script."
+        )
         # p.loadURDF("samurai.urdf",
         #            physicsClientId=self.CLIENT
         #            )
@@ -1946,18 +1949,6 @@ def _addObstacles(self):
         # p.loadURDF(os.path.dirname(os.path.abspath(__file__))+"/../assets/voliere.urdf",
         #            physicsClientId=self.CLIENT
         #            )
-        shape_id = p.createVisualShape(
-            shapeType=p.GEOM_MESH,
-            fileName="/media/ge79qad/FastScratch/GFlow-3D/build/ball.obj",
-            physicsClientId=self.CLIENT,
-        )
-        body_id = p.createMultiBody(
-            baseVisualShapeIndex=shape_id,
-            basePosition=(0, 0, 2.5),
-            baseOrientation=(0, 0, 0, 1),
-            physicsClientId=self.CLIENT,
-            #    useFixedBase=1
-        )
         # p.loadURDF("duck_vhacd.urdf",
         #            [-.5, -.5, .05],
         #            p.getQuaternionFromEuler([0, 0, 0]),