Fix up r300870

The sys/types.h fix I proposed was only tested with zfs(4), not with
libzpool, which is where the build failure actually existed

Remove vm/vm_pageout.h from arc.c and zfs_vnops.c because they're both
unneeded

MFC after: 1 week
X-MFC with: r300865, r300870
In collaboration with: kib
Submitted by: alc
Sponsored by: EMC / Isilon Storage Division

sys/cddl/contrib/opensolaris/uts/common/fs/zfs/arc.c

@@ -120,7 +120,6 @@
  *	- ARC header release, as it removes from L2ARC buflists
  */
 
-#include <sys/types.h>
 #include <sys/spa.h>
 #include <sys/zio.h>
 #include <sys/zio_compress.h>
@@ -141,7 +140,6 @@
 #include <zfs_fletcher.h>
 #include <sys/sdt.h>
 
-#include <vm/vm_pageout.h>
 #include <machine/vmparam.h>
 
 #ifdef illumos

sys/cddl/contrib/opensolaris/uts/common/fs/zfs/zfs_vnops.c

@@ -75,7 +75,6 @@
 #include <sys/sched.h>
 #include <sys/acl.h>
 #include <vm/vm_param.h>
-#include <vm/vm_pageout.h>
 
 /*
  * Programming rules.