Remove dead code

These variables have not been used
since 463388f4.

config/chroot_local-includes/usr/local/bin/tails-upgrade-frontend-wrapper

@@ -26,9 +26,6 @@ os.environ['PATH'] = '/usr/local/bin:/usr/bin:/bin'
 os.environ['TEXTDOMAIN'] = 'tails'
 
 CMD = os.path.basename(sys.argv[0])
-TORDATE_DIR = '/run/tordate'
-TORDATE_DONE_FILE = '{}/done'.format(TORDATE_DIR)
-INOTIFY_TIMEOUT = 60
 # While running iuk.git:features/frontend:
 #  - tails-upgrade-frontend never uses more than 100 * 10^6 bytes
 #  - tails-iuk-get-upgrade-description never uses more than 95 * 10^6 bytes