stop suggesting bit (#7559)

Author: MichaelChirico

DESCRIPTION

@@ -3,7 +3,7 @@ Version: 1.18.99
 Title: Extension of `data.frame`
 Depends: R (>= 3.5.0)
 Imports: methods
-Suggests: bit64 (>= 4.0.0), bit (>= 4.0.4), R.utils, xts, zoo (>= 1.8-1), yaml, litedown
+Suggests: bit64 (>= 4.0.0), R.utils, xts, zoo (>= 1.8-1), yaml, litedown
 Enhances: knitr, xfun
 Description: Fast aggregation of large data (e.g. 100GB in RAM), fast ordered joins, fast add/modify/delete of columns by group using no copies at all, list columns, friendly and fast character-separated-value read/write. Offers a natural and flexible syntax, for faster development.
 License: MPL-2.0 | file LICENSE