staging: r8188eu: remove unneeded initializations

staging: r8188eu: remove unneeded initializations

In the function rtw_reset_securitypriv() three variables are
initialized to zero. That is not necessary because they are all
set before use in the code. Remove the initializations.

Tested-by: Philipp Hortmann <philipp.g.hortmann@gmail.com> # Edimax N150
Signed-off-by: Michael Straube <straube.linux@gmail.com>
Link: https://lore.kernel.org/r/20220819125428.8412-7-straube.linux@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>