[SCSI] remove scsi_request infrastructure

With Achim patch the last user (gdth) is switched away from scsi_request
so we an kill it now.  Also disables some code in i2o_scsi that was
broken since the sg driver stopped using scsi_requests.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>
diff --git a/drivers/scsi/constants.c b/drivers/scsi/constants.c
index e24835b..d92d504 100644
--- a/drivers/scsi/constants.c
+++ b/drivers/scsi/constants.c
@@ -13,9 +13,9 @@
 #include <linux/kernel.h>
 
 #include <scsi/scsi.h>
+#include <scsi/scsi_cmnd.h>
 #include <scsi/scsi_device.h>
 #include <scsi/scsi_host.h>
-#include <scsi/scsi_request.h>
 #include <scsi/scsi_eh.h>
 #include <scsi/scsi_dbg.h>
 
@@ -1261,16 +1261,6 @@
 }
 EXPORT_SYMBOL(scsi_print_sense);
 
-void scsi_print_req_sense(const char *devclass, struct scsi_request *sreq)
-{
-	const char *name = devclass;
-
-	if (sreq->sr_request->rq_disk)
-		name = sreq->sr_request->rq_disk->disk_name;
-	__scsi_print_sense(name, sreq->sr_sense_buffer, SCSI_SENSE_BUFFERSIZE);
-}
-EXPORT_SYMBOL(scsi_print_req_sense);
-
 void scsi_print_command(struct scsi_cmnd *cmd)
 {
 	/* Assume appended output (i.e. not at start of line) */