staging: ft1000: ft1000-pcmcia: removed unused variable in ft1000_hw.c

Variable whose value is initialized but never used is unnecessary. The following Coccinelle semantic patch removed the unused variable.

@e@
identifier i;
position p;
type T;
@@

extern T i@p;

@@
type T;
identifier i;
constant C;
position p != e.p;
@@

- T i@p;
  <+... when != i
- i = C;
  ...+>

Signed-off-by: Jiayi Ye <yejiayily@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>