Update test_core.py

Author: giovannivolpe

deeptrack/tests/backend/test_core.py

@@ -1,7 +1,7 @@
 # pylint: disable=C0115:missing-class-docstring
 # pylint: disable=C0116:missing-function-docstring
 # pylint: disable=C0103:invalid-name
-
+ 
 # Use this only when running the test locally.
 # import sys
 # sys.path.append(".")  # Adds the module to path.