Removed some unuseful imports, signal handler and config dict

main.py

@@ -3,11 +3,9 @@
 Serve cloud init files
 """
 
-import configparser
 import os
 import json
 import smtplib
-import socket
 import sys
 from email.header import Header
 from email.mime.text import MIMEText
@@ -61,31 +59,16 @@ if __name__ == "__main__":
         TO_MAIL = os.environ["to_mail"]
         FROM_MAIL = os.environ["from_mail"]
         FROM_MAIL_PASSWORD = os.environ["from_mail_password"]
-    except:
-        raise "Please check missing environment variables: to_mail, from_mail, from_mail_password"
+    except:  # noqa:E722
+        raise "Please check missing environment variables: to_mail, from_mail, \
+            from_mail_password"
 
     cherrypy.server.socket_host = SERVER_HOST
     cherrypy.server.socket_port = SERVER_PORT
     ENGINE = cherrypy.engine
 
-    CURRENT_DIR = os.path.dirname(os.path.abspath(__file__))
-    CONFIG = {
-        '/include': {
-            'tools.staticdir.on': True,
-            'tools.staticdir.dir': os.path.join(CURRENT_DIR,
-                                                'data',
-                                                'include'),
-            'tools.staticdir.content_types': {
-                'yml': 'text/yaml'
-                }
-            }
-        }
-    cherrypy.tree.mount(ROOT, config=CONFIG)
+    cherrypy.tree.mount(ROOT, config={})
 
-    if hasattr(ENGINE, "signal_handler"):
-        ENGINE.signal_handler.subscribe()
-    if hasattr(ENGINE, "console_control_handler"):
-        ENGINE.console_control_handler.subscribe()
     try:
         ENGINE.start()
     except Exception:  # pylint: disable=broad-except