staging: r8188eu: remove useless memset

psetkeyparm is kzalloced buffer, there is no need in zeroing it one more
time, since kzalloc had already set memory to 0.

Fixes: 15865124 ("staging: r8188eu: introduce new core dir for RTL8188eu driver")
Signed-off-by: Pavel Skripkin <paskripkin@gmail.com>
Link: https://lore.kernel.org/r/97a283ed5b97632033b0fc7c6aa0fbfc82f06da3.1630692375.git.paskripkin@gmail.com


Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>