staging: vt6655: remove unused function in mac.c

Removed the unused function MACvGetShortRetryLimit, which also
fixed the following sparse warning:
drivers/staging/vt6655/mac.c:162:6: warning:
symbol 'MACvGetShortRetryLimit' was not declared. Should it be static?

Signed-off-by: Fred Chou <fred.chou.nd@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
1 file changed