roomservice: Remove python2 imports

Change-Id: Id65a4c139f14106632587634c42ef9941b55d0c1

build/tools/roomservice.py

@@ -23,20 +23,9 @@ import netrc
 import os
 import re
 import sys
-try:
+import urllib.error
-  # For python3
+import urllib.parse
-  import urllib.error
+import urllib.request
-  import urllib.parse
-  import urllib.request
-except ImportError:
-  # For python2
-  import imp
-  import urllib2
-  import urlparse
-  urllib = imp.new_module('urllib')
-  urllib.error = urllib2
-  urllib.parse = urlparse
-  urllib.request = urllib2
 
 from xml.etree import ElementTree