Remove unused context variables.

biscuit/apps/exlibris/views.py

@@ -93,8 +93,6 @@ def edit_book(request, id_=None, isbn=None):
 
 @login_required
 def delete_book(request, id_):
-    context = {}
-
     book = get_object_or_404(Book, pk=id_)
     title = book.title
 
@@ -176,8 +174,6 @@ def edit_book_copy(request, id_):
 
 @login_required
 def delete_book_copy(request, id_):
-    context = {}
-
     book_copy = get_object_or_404(BookCopy, pk=id_)
     book = book_copy.book