Fix a copy-paste issue in bookshelf model

ram/bookshelf/migrations/0005_alter_book_options.py

@@ -12,9 +12,6 @@ class Migration(migrations.Migration):
     operations = [
         migrations.AlterModelOptions(
             name="book",
-            options={
-                "ordering": ["authors__last_name", "title"],
-                "verbose_name_plural": "Rolling stock",
-            },
+            options={"ordering": ["authors__last_name", "title"]},
         ),
     ]

ram/bookshelf/models.py

@@ -54,7 +54,6 @@ class Book(models.Model):
 
     class Meta:
         ordering = ["authors__last_name", "title"]
-        verbose_name_plural = "Rolling stock"
 
     def __str__(self):
         return self.title