staging: r8188eu: remove silentreset from hal_ops

Remove silentreset from hal_ops and remove its wrapper
rtw_hal_sreset_reset().
Call rtl8188e_silentreset_for_specific_platform() directly instead.

Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20210906190223.11396-18-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
