staging: comedi: mite.c: remove commented out USE_KMALLOC

The definition of the macro `USE_KMALLOC` is commented out, and nothing
refers to it.  Remove the commented out macro.
Signed-off-by: Ian Abbott <abbotti@mev.co.uk>
Reviewed-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/mite.c

@@ -42,8 +42,6 @@
 
 */
 
-/* #define USE_KMALLOC */
-
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 
 #include <linux/module.h>