Revert "Have provide: annotate the original identifier as well."

This reverts commit 3f889bcf8c.

Unfortunately, this change is not backwards compatible, as seen in
both DrDr failures and errors reported by Ben Greenman.

typed-racket-lib/typed-racket/base-env/prims.rkt

@@ -637,7 +637,6 @@ the typed racket language.
      (define/with-syntax (i* ...) i*s)
      (syntax/loc stx
        (begin (: i* t) ...
-              (: i  t) ...
               (provide (rename-out [i* i] ...))))]))
 
 (define-syntax (declare-refinement stx)