Remove dead FIO_FILE_EXISTS flag

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
diff --git a/filesetup.c b/filesetup.c
index 76b45a9..785afce 100644
--- a/filesetup.c
+++ b/filesetup.c
@@ -33,7 +33,7 @@
 	if (td_write(td) && !td->o.overwrite)
 		unlink_file = 1;
 
-	if ((unlink_file || new_layout) && (f->flags & FIO_FILE_EXISTS)) {
+	if (unlink_file || new_layout) {
 		if (unlink(f->file_name) < 0) {
 			td_verror(td, errno, "unlink");
 			return 1;
diff --git a/fio.h b/fio.h
index 86020d9..028ef4c 100644
--- a/fio.h
+++ b/fio.h
@@ -269,10 +269,9 @@
 enum fio_file_flags {
 	FIO_FILE_OPEN		= 1 << 0,	/* file is open */
 	FIO_FILE_CLOSING	= 1 << 1,	/* file being closed */
-	FIO_FILE_EXISTS		= 1 << 2,	/* file there */
-	FIO_FILE_EXTEND		= 1 << 3,	/* needs extend */
-	FIO_FILE_DONE		= 1 << 4,	/* io completed to this file */
-	FIO_SIZE_KNOWN		= 1 << 5,	/* size has been set */
+	FIO_FILE_EXTEND		= 1 << 2,	/* needs extend */
+	FIO_FILE_DONE		= 1 << 3,	/* io completed to this file */
+	FIO_SIZE_KNOWN		= 1 << 4,	/* size has been set */
 };
 
 /*