[nba] Simplify and use unicode_literals

Remove the commented parts for extracting the upload date

youtube_dl/extractor/nba.py

@@ -1,48 +1,39 @@
+from __future__ import unicode_literals
+
 import re
 
 from .common import InfoExtractor
-from ..utils import (
-    ExtractorError,
-)
 
 
 class NBAIE(InfoExtractor):
     _VALID_URL = r'^(?:https?://)?(?:watch\.|www\.)?nba\.com/(?:nba/)?video(/[^?]*?)(?:/index\.html)?(?:\?.*)?$'
     _TEST = {
-        u'url': u'http://www.nba.com/video/games/nets/2012/12/04/0021200253-okc-bkn-recap.nba/index.html',
-        u'file': u'0021200253-okc-bkn-recap.nba.mp4',
-        u'md5': u'c0edcfc37607344e2ff8f13c378c88a4',
-        u'info_dict': {
-            u"description": u"Kevin Durant scores 32 points and dishes out six assists as the Thunder beat the Nets in Brooklyn.", 
-            u"title": u"Thunder vs. Nets"
-        }
+        'url': 'http://www.nba.com/video/games/nets/2012/12/04/0021200253-okc-bkn-recap.nba/index.html',
+        'file': u'0021200253-okc-bkn-recap.nba.mp4',
+        'md5': u'c0edcfc37607344e2ff8f13c378c88a4',
+        'info_dict': {
+            'description': 'Kevin Durant scores 32 points and dishes out six assists as the Thunder beat the Nets in Brooklyn.',
+            'title': 'Thunder vs. Nets',
+        },
     }
 
     def _real_extract(self, url):
         mobj = re.match(self._VALID_URL, url)
-        if mobj is None:
-            raise ExtractorError(u'Invalid URL: %s' % url)
-
         video_id = mobj.group(1)
 
         webpage = self._download_webpage(url, video_id)
 
-        video_url = u'http://ht-mobile.cdn.turner.com/nba/big' + video_id + '_nba_1280x720.mp4'
+        video_url = 'http://ht-mobile.cdn.turner.com/nba/big' + video_id + '_nba_1280x720.mp4'
 
         shortened_video_id = video_id.rpartition('/')[2]
         title = self._og_search_title(webpage, default=shortened_video_id).replace('NBA.com: ', '')
 
-        # It isn't there in the HTML it returns to us
-        # uploader_date = self._html_search_regex(r'<b>Date:</b> (.*?)</div>', webpage, 'upload_date', fatal=False)
-
         description = self._html_search_regex(r'<meta name="description" (?:content|value)="(.*?)" />', webpage, 'description', fatal=False)
 
-        info = {
+        return {
             'id': shortened_video_id,
             'url': video_url,
             'ext': 'mp4',
             'title': title,
-            # 'uploader_date': uploader_date,
             'description': description,
         }
-        return [info]