fixed typo

sql/patch_30_31.sql

@@ -23,7 +23,6 @@ UPDATE transcript SET description=NULL WHERE description="";
 
 # usefull settings for the new tables
 
-UPDATE gene SET source = 'ensembl';
 UPDATE gene g, xref x, external_db ed SET g.confidence='KNOWN' WHERE g.display_xref_id = x.xref_id and x.external_db_id = ed.external_db_id and g.display_xref_id != 0 and ed.status like 'KNOWN%';
 UPDATE transcript t, xref x, external_db ed SET t.confidence='KNOWN' WHERE t.display_xref_id = x.xref_id and x.external_db_id = ed.external_db_id and t.display_xref_id != 0 and ed.status like 'KNOWN%';