Merge ~cjwatson/ubuntu-archive-tools:flake8-unused-imports into ubuntu-archive-tools:main

[Colin Watson]

Remove unused imports spotted by flake8

[Steve Langasek (vorlon)]

review: Approve

diff --git a/generate-freeze-block b/generate-freeze-block
index ba841b4..ea43ce6 100755
--- a/generate-freeze-block
+++ b/generate-freeze-block
@@ -29,7 +29,6 @@ import json
 import logging
 import os
 import re
-import shutil
 import sys
 import urllib.request
 
diff --git a/kernel_workflow.py b/kernel_workflow.py
index a211776..264aac2 100644
--- a/kernel_workflow.py
+++ b/kernel_workflow.py
@@ -18,7 +18,6 @@
 
 import re
 import sys
-import subprocess
 
 
 class KernelWorkflowError(Exception):
diff --git a/queue b/queue
index d1406bd..798eb81 100755
--- a/queue
+++ b/queue
@@ -19,7 +19,6 @@
 
 from __future__ import print_function
 
-import collections
 from datetime import datetime
 from operator import attrgetter
 from optparse import OptionParser, SUPPRESS_HELP
diff --git a/sru-accept b/sru-accept
index 71bc888..2155c57 100755
--- a/sru-accept
+++ b/sru-accept
@@ -17,7 +17,6 @@
 """Adjust SRU bugs after accepting the corresponding update."""
 
 from optparse import OptionParser
-import re
 import sys
 
 import launchpadlib.errors
diff --git a/update-i386-whitelist b/update-i386-whitelist
index b657305..bf4481e 100755
--- a/update-i386-whitelist
+++ b/update-i386-whitelist
@@ -26,7 +26,6 @@ from launchpadlib.launchpad import Launchpad
 import optparse
 from urllib.request import urlopen
 import sys
-import glob
 
 def get_sources_from_url(url):
     '''Download the germinate output and parse out the list of sources.