Disable artwork processing for exportMetadata().

This disables the output of artwork definitions when generating an mxml
file through the bindings.  There is currently no support for handling
local artwork in the files at this time.

mythtv/bindings/python/MythTV/dataheap.py

@@ -400,13 +400,13 @@ def _allow_change(self, tag, overwrite):
                                         cast.job.lower().replace(' ','_'))))
 
         # pull images
-        for image in metadata.images:
-            if not hasattr(self.artwork, image.type):
-                pass
-            if getattr(self.artwork, image.type, ''):
-                continue
-            setattr(self.artwork, image.type, image.filename)
-            getattr(self.artwork, image.type).downloadFrom(image.url)
+#        for image in metadata.images:
+#            if not hasattr(self.artwork, image.type):
+#                pass
+#            if getattr(self.artwork, image.type, ''):
+#                continue
+#            setattr(self.artwork, image.type, image.filename)
+#            getattr(self.artwork, image.type).downloadFrom(image.url)
 
         self.update()
 
@@ -1034,10 +1034,10 @@ def exportMetadata(self):
             metadata.countries.append(country.country)
 
         # pull images
-        for arttype in ['coverart', 'fanart', 'banner', 'screenshot']:
-            art = getattr(self, arttype)
-            if art:
-                metadata.images.append(OrdDict((('type',arttype), ('filename',art))))
+#        for arttype in ['coverart', 'fanart', 'banner', 'screenshot']:
+#            art = getattr(self, arttype)
+#            if art:
+#                metadata.images.append(OrdDict((('type',arttype), ('filename',art))))
 
         return metadata