face names in blank-mode.el

[Dan Nicolaescu]

Isn't using the -face suffix for faces deprecated now?
The new package blank-mode.el that was very recently added does it for
all of its faces:

$ grep defface blank-mode.el
;; indicating defface byte-compilation warnings.
(defface blank-space-face
(defface blank-hspace-face              ; 'nobreak-space
(defface blank-tab-face
(defface blank-newline-face
(defface blank-trailing-face            ; 'trailing-whitespace
(defface blank-line-face
(defface blank-space-before-tab-face