ALTER TABLE Tickets
  DROP COLUMN IssueStatement,
  DROP COLUMN Resolution,
  DROP COLUMN Disabled;

ALTER TABLE Users
  DROP COLUMN EmailEncoding,
  DROP COLUMN WebEncoding,
  DROP COLUMN ExternalContactInfoId,
  DROP COLUMN ContactInfoSystem,
  DROP COLUMN ExternalAuthId,
  DROP COLUMN AuthSystem,
  DROP COLUMN PGPKey;

ALTER TABLE Principals
  DROP COLUMN ObjectId;

ALTER TABLE Groups
  DROP COLUMN Type;

