mmap engine: remove 'mmap too large' check for 32-bit

We now support large files regardless of architecture, so just kill
the check again.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/engines/mmap.c b/engines/mmap.c
index 05a4d51..a5e0c6f 100644
--- a/engines/mmap.c
+++ b/engines/mmap.c
@@ -43,8 +43,6 @@
 
 		f->mmap_ptr = NULL;
 		td_verror(td, err, "mmap");
-		if (err == EINVAL && f->io_size > 2*1024*1024*1024UL)
-			log_err("fio: mmap size likely too large\n");
 		goto err;
 	}