SQL bugfix.

misc-scripts/xref_mapping/XrefMapper/BasicMapper.pm

@@ -2163,7 +2163,7 @@ sub cleanup_sources_file{
     print DEL         "AND xref.external_db_id = $id\n";
 
     print DEL "DELETE gx ";
-    print DEL     "FROM from xref x, object_xref ox LEFT JOIN go_xref gx ";
+    print DEL     "FROM xref x, object_xref ox LEFT JOIN go_xref gx ";
     print DEL       "ON ox.object_xref_id = gx.object_xref_id ";
     print DEL       "WHERE x.xref_id = ox.xref_id ";
     print DEL          "AND x.external_db_id = $id ";