Remove Python 2 imports fallback

setup.py

@@ -10,25 +10,10 @@ import subprocess
 import hashlib
 from collections import namedtuple
 from functools import partial
-try:
-    from io import BytesIO
-except:
-    try:
-        from cStringIO import StringIO as BytesIO
-    except:
-        from StringIO import StringIO as BytesIO
-try:
-    from urllib.request import urlopen, Request
-except:
-    from urllib2 import urlopen, Request
-try:
-    from urllib.parse import urljoin, urlparse, urlunparse
-except:
-    from urlparse import urljoin, urlparse, urlunparse
-try:
-    from html.parser import HTMLParser
-except:
-    from HTMLParser import HTMLParser
+from io import BytesIO
+from urllib.request import urlopen
+from urllib.parse import urljoin, urlparse, urlunparse
+from html.parser import HTMLParser
 
 from setuptools import setup
 from setuptools.command.build_ext import build_ext

tests/test_core.py

@@ -1,10 +1,7 @@
 import sys
 import threading
 import time
-try:
-    import unittest2 as unittest
-except:
-    import unittest
+import unittest
 
 import frida
 

tests/test_pep503_page_parser.py

@@ -1,8 +1,5 @@
 import sys
-try:
-    import unittest2 as unittest
-except:
-    import unittest
+import unittest
 
 import setup
 

tests/test_rpc.py

@@ -3,10 +3,7 @@ import subprocess
 import sys
 import threading
 import time
-try:
-    import unittest2 as unittest
-except:
-    import unittest
+import unittest
 
 import frida