Refactoring: Remove "published" from PodcastChannel

This field wasn't used at all in gPodder's UI or backend.

src/gpodder/dbsqlite.py

@@ -66,7 +66,6 @@ class Database(object):
         'link',
         'description',
         'cover_url',
-        'published',
         'auth_username',
         'auth_password',
         'http_last_modified',
@@ -83,7 +82,6 @@ class Database(object):
         'title',
         'description',
         'url',
-        'published',
         'guid',
         'link',
         'file_size',

src/gpodder/model.py

@@ -750,7 +750,6 @@ class PodcastChannel(PodcastModelObject):
         self.link = custom_feed.get_link()
         self.description = custom_feed.get_description()
         self.cover_url = custom_feed.get_image()
-        self.published = int(time.time())
         self.save()
 
         guids = [episode.guid for episode in self.get_all_episodes()]
@@ -776,11 +775,6 @@ class PodcastChannel(PodcastModelObject):
             self.title = self.title[len(YOUTUBE_PREFIX):] + ' on YouTube'
         # End YouTube-specific title FIX
 
-        try:
-            self.published = int(rfc822.mktime_tz(feed.feed.get('updated_parsed', None+(0,))))
-        except:
-            self.published = int(time.time())
-
         if hasattr(feed.feed, 'image'):
             for attribute in ('href', 'url'):
                 new_value = getattr(feed.feed.image, attribute, None)
@@ -975,7 +969,6 @@ class PodcastChannel(PodcastModelObject):
         self.link = ''
         self.description = ''
         self.cover_url = None
-        self.published = 0
         self.parse_error = None
 
         self.auth_username = ''

src/gpodder/schema.py

@@ -33,7 +33,6 @@ def initialize_database(db):
         link TEXT NOT NULL DEFAULT '',
         description TEXT NOT NULL DEFAULT '',
         cover_url TEXT NULL DEFAULT NULL,
-        published INTEGER NOT NULL DEFAULT 0,
         auth_username TEXT NULL DEFAULT NULL,
         auth_password TEXT NULL DEFAULT NULL,
         http_last_modified TEXT NULL DEFAULT NULL,
@@ -128,7 +127,6 @@ def convert_gpodder2_db(old_db, new_db):
                 row['link'],
                 row['description'],
                 row['image'],
-                row['pubDate'],
                 row['username'] or None,
                 row['password'] or None,
                 row['last_modified'] or None,