Get rid if ddir_trim() macro

Signed-off-by: Jens Axboe <axboe@fb.com>
diff --git a/ioengines.c b/ioengines.c
index 07d1d56..6370a56 100644
--- a/ioengines.c
+++ b/ioengines.c
@@ -321,7 +321,7 @@
 			 "support direct IO, or iomem_align= is bad.\n");
 	}
 
-	if (!td->io_ops->commit || ddir_trim(io_u->ddir)) {
+	if (!td->io_ops->commit || io_u->ddir == DDIR_TRIM) {
 		io_u_mark_submit(td, 1);
 		io_u_mark_complete(td, 1);
 	}