Update __init__.py

Author: Pwhsky

deeptrack/test/__init__.py

@@ -9,7 +9,6 @@
 from .test_noises import *
 from .test_optics import *
 from .test_properties import *
-from .test_radialcenter import *
 from .test_scatterers import *
 from .test_sequences import *
 from .test_statistics import *