src: Remove all unused sys/mman.h inclusions

Remove leftover inclusions of the sys/mman header file.

Reviewed-by: Hirokazu Honda <hiroh@chromium.org>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran.bingham@ideasonboard.com>

src/libcamera/ipa_module.cpp

@@ -16,7 +16,6 @@
 #include <fcntl.h>
 #include <link.h>
 #include <string.h>
-#include <sys/mman.h>
 #include <sys/stat.h>
 #include <sys/types.h>
 #include <unistd.h>