maint: remove unused include for dirent.h

A number of files were including dirent.h but not using any
of the functions it provides

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

fsdev/virtio-9p-marshal.c

@@ -14,7 +14,6 @@
 #include <glib.h>
 #include <glib/gprintf.h>
 #include <sys/types.h>
-#include <dirent.h>
 #include <sys/time.h>
 #include <utime.h>
 #include <sys/uio.h>

hw/tpm/tpm_passthrough.c

@@ -22,8 +22,6 @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>
  */
 
-#include <dirent.h>
-
 #include "qemu-common.h"
 #include "qapi/error.h"
 #include "qemu/error-report.h"

hw/usb/redirect.c

@@ -33,7 +33,6 @@
 #include "qemu/iov.h"
 #include "sysemu/char.h"
 
-#include <dirent.h>
 #include <sys/ioctl.h>
 #include <signal.h>
 #include <usbredirparser.h>

hw/vfio/pci.c

@@ -18,7 +18,6 @@
  *  Copyright (C) 2008, IBM, Muli Ben-Yehuda (muli@il.ibm.com)
  */
 
-#include <dirent.h>
 #include <linux/vfio.h>
 #include <sys/ioctl.h>
 #include <sys/mman.h>

qemu-char.c

@@ -51,7 +51,6 @@
 #include <netinet/in.h>
 #include <net/if.h>
 #include <arpa/inet.h>
-#include <dirent.h>
 #include <netdb.h>
 #include <sys/select.h>
 #ifdef CONFIG_BSD