Proto Alpha: Patch scripts with deprecated annotations during migration.

The following discussion from !3730 (merged) should be addressed:

• @mbouaziz started a discussion:

  In the contracts from August 2021, I optimistically grepped parameter % and found only one: exprteUgjaxjf3jTheaj2fQkQsPFynyj3pCJ4mbzP26D4giEjQBwFb.tz, in which parameter %main unit ; should be replaced by parameter (unit %main) ;. Maybe there are more since then.

See issue !4366 (merged) for details of what has been deprecated and why. Tl;dr: annotations on parameter keyword are no longe allowed.