Removed unused regexes in django.core.management.templates.

Unused since their introduction in a9a0f0b03f.

django/core/management/templates.py

@@ -2,7 +2,6 @@ import cgi
 import mimetypes
 import os
 import posixpath
-import re
 import shutil
 import stat
 import tempfile
@@ -18,9 +17,6 @@ from django.template import Context, Engine
 from django.utils import archive
 from django.utils.version import get_docs_version
 
-_drive_re = re.compile('^([a-z]):', re.I)
-_url_drive_re = re.compile('^([a-z])[:|]', re.I)
-
 
 class TemplateCommand(BaseCommand):
     """