Staging: comedi: addi-data: don't initialize a static variable to 0

In hwdrv_apci1564.c, one static variable is zero initialized.  This is
unneeded and redundant, so we remove the initialization.
Signed-off-by: Chase Southwood <chase.southwood@yahoo.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/comedi/drivers/addi-data/hwdrv_apci1564.c

@@ -100,7 +100,7 @@ This program is distributed in the hope that it will be useful, but WITHOUT ANY
 #define APCI1564_TCW_WARN_TIMEBASE			28
 
 /* Global variables */
-static unsigned int ui_InterruptStatus_1564 = 0;
+static unsigned int ui_InterruptStatus_1564;
 static unsigned int ui_InterruptData, ui_Type;
 
 /*