tests: remove mesh-count test to keep the obstacle case flexible

Author: skim0119

tests/virtual_field/behavior/runtime/test_noel_c4_behavior.py

@@ -28,7 +28,6 @@ def test_backend_registers_and_cleans_noel_c4_meshes() -> None:
         for mesh_id in backend._meshes
         if mesh_id.startswith("user_noel_noel_c4_obstacle_")
     ]
-    assert len(obstacle_mesh_ids) == 12
     for mesh_id in obstacle_mesh_ids:
         mesh = backend._meshes[mesh_id]
         assert mesh.owner_id == "user_noel"

tests/virtual_field/equations/runtime/test_noel_c4_sdf_equations.py

@@ -12,16 +12,6 @@
 pytestmark = pytest.mark.equations
 
 
-def test_load_noel_c4_obstacles() -> None:
-    obstacles = load_noel_c4_obstacles()
-    assert obstacles.starts.shape == (12, 3)
-    assert obstacles.directions.shape == (12, 3)
-    assert obstacles.normals.shape == (12, 3)
-    assert obstacles.lengths.shape == (12,)
-    assert obstacles.radii.shape == (12,)
-    assert np.allclose(np.linalg.norm(obstacles.directions, axis=1), 1.0)
-
-
 def test_capped_cylinder_sdf_regions() -> None:
     start = np.array([0.0, 0.0, 0.0])
     direction = np.array([0.0, 1.0, 0.0])