Remove unused FileStorage class

backend/secfit/workouts/models.py

@@ -2,30 +2,11 @@
 log workouts (Workout), which contain instances (ExerciseInstance) of various
 type of exercises (Exercise). The user can also upload files (WorkoutFile) .
 """
-import os
-
-from django.conf import settings
 from django.contrib.auth import get_user_model
 from django.core.files.storage import FileSystemStorage
 from django.db import models
 
 
-class OverwriteStorage(FileSystemStorage):
-    """Filesystem storage for overwriting files. Currently unused."""
-
-    def get_available_name(self, name, max_length=None):
-        """https://djangosnippets.org/snippets/976/
-        Returns a filename that's free on the target storage system, and
-        available for new content to be written to.
-
-        Args:
-            name (str): Name of the file
-            max_length (int, optional): Maximum length of a file name. Defaults to None.
-        """
-        if self.exists(name):
-            os.remove(os.path.join(settings.MEDIA_ROOT, name))
-
-
 # Create your models here.
 class Workout(models.Model):
     """Django model for a workout that users can log.