Staging: rtl8192u: kconfig: Remove blank help text

Blank help texts are probably either a typo, a Kconfig misunderstanding,
or some kind of half-committing to adding a help text (in which case a
TODO comment would be clearer, if the help text really can't be added
right away).

Best to remove them, IMO.
Signed-off-by: NUlf Magnusson <ulfalizer@gmail.com>
Acked-by: NRandy Dunlap <rdunlap@infradead.org>
Signed-off-by: NMasahiro Yamada <yamada.masahiro@socionext.com>

drivers/staging/rtl8192u/Kconfig

@@ -5,4 +5,3 @@ config RTL8192U
 	select WIRELESS_EXT
 	select WEXT_PRIV
 	select CRYPTO
-	---help---