staging: rtl8192e: Remove unused variable initialized_at_probe

initialized_at_probe is initialized and never used. Remove resulting dead
code.

Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/4855b2dd5b7296b0eb10e697f605fb820e1dfc7b.1669156825.git.philipp.g.hortmann@gmail.com


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