chore: remove cloud storage remainings (#1934)

api/libretime_api/storage/models/__init__.py

@@ -1,3 +1,2 @@
-from .cloud_file import CloudFile
 from .file import File
 from .library import Library

api/libretime_api/storage/models/cloud_file.py

@@ -1,17 +0,0 @@
-from django.db import models
-
-
-class CloudFile(models.Model):
-    storage_backend = models.CharField(max_length=512)
-    resource_id = models.TextField()
-    filename = models.ForeignKey(
-        "storage.File",
-        on_delete=models.DO_NOTHING,
-        blank=True,
-        null=True,
-        db_column="cc_file_id",
-    )
-
-    class Meta:
-        managed = False
-        db_table = "cloud_file"