Remove unused variable that generates a compile time warning

Signed-off-by: Yan Burman <yan_952@hotmail.com>

--- linux-2.6.19-rc5_orig/drivers/acpi/events/evmisc.c	2006-11-09 12:16:21.000000000 +0200
+++ linux-2.6.19-rc5/drivers/acpi/events/evmisc.c	2006-11-11 00:11:22.000000000 +0200
@@ -331,7 +331,6 @@ static void ACPI_SYSTEM_XFACE acpi_ev_gl
 static u32 acpi_ev_global_lock_handler(void *context)
 {
 	u8 acquired = FALSE;
-	acpi_status status;
 
 	/*
 	 * Attempt to get the lock