Remove daemonize hack, as PR shippped

Fixed by https://github.com/thesharp/daemonize/pull/70

catfish/__main__.py

@@ -1,6 +1,4 @@
 import functools
-import os
-import sys
 
 import click
 import daemonize
@@ -31,8 +29,6 @@ def start(ctx, port, no_fork):
         "catfish", worker.PID_FILE, functools.partial(worker.run, port), verbose=True
     )
     try:
-        # HACK: Temporary hack until https://github.com/thesharp/daemonize/pull/70 is solved
-        os._exit = sys.exit
         daemon.start()
     except SystemExit:
         pass

setup.py

@@ -13,7 +13,7 @@ setup(
     pathon_requires=">=3.6",
     install_requires=[
         "click",
-        "daemonize",
+        "daemonize>=2.5.0",
         "psutil",
         "aiohttp",
         "ujson",