Remove unused code

src/calibre/devices/manager.py

@@ -1,40 +0,0 @@
-__license__   = 'GPL v3'
-__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
-
-
-'''
-Define a threaded interface for working with devices.
-'''
-
-import threading, Queue
-
-
-class DeviceManager(object):
-
-    def __init__(self):
-        self.devices = []
-        self.device_jobs = Queue(0)
-
-
-class Job(object):
-    count = 0
-
-    def __init__(self, func, args):
-        self.completed = False
-        self.exception = None
-
-
-class Worker(threading.Thread):
-
-    def __init__(self, jobs):
-        self.jobs = jobs
-        self.results = []
-        threading.Thread.__init__(self)
-        self.setDaemon(True)
-
-    def run(self):
-        '''Thread loops taking jobs from the queue as they become available'''
-        while True:
-            self.jobs.get(True, None)
-            # Do job
-            self.jobs.task_done()