Remove workaround for Docker bug #2267 now that Docker has fixed this

Closes GH-155.

image/bin/my_init

@@ -56,9 +56,6 @@ def is_exe(path):
 	except OSError:
 		return False
 
-def create_hosts_file():
-	run_command_killable("/bin/cp", "/etc/hosts", "/etc/workaround-docker-2267/")
-
 def import_envvars(clear_existing_environment = True, override_existing_environment = True):
 	new_env = {}
 	for envfile in listdir("/etc/container_environment"):
@@ -252,7 +249,6 @@ def install_insecure_key():
 	run_command_killable("/usr/sbin/enable_insecure_key")
 
 def main(args):
-	create_hosts_file()
 	import_envvars(False, False)
 	export_envvars()
 

image/bin/workaround-docker-2267

@@ -1,2 +0,0 @@
-#!/bin/sh
-exec /usr/bin/perl -pi -e 's:/etc/hosts:/cte/hosts:g' /lib/x86_64-linux-gnu/libnss_files.so.2

image/prepare.sh

@@ -30,12 +30,6 @@ ln -sf /bin/true /sbin/initctl
 dpkg-divert --local --rename --add /usr/bin/ischroot
 ln -sf /bin/true /usr/bin/ischroot
 
-## Workaround https://github.com/dotcloud/docker/issues/2267,
-## not being able to modify /etc/hosts.
-mkdir -p /etc/workaround-docker-2267
-ln -s /etc/workaround-docker-2267 /cte
-cp /build/bin/workaround-docker-2267 /usr/bin/
-
 ## Install HTTPS support for APT.
 $minimal_apt_get_install apt-transport-https ca-certificates