Removed unused include of <sys/buf.h> from synopsis. This include is

needed to access the internals of buffers but not necessarily to use
the VOP.  <sys/buf.h> recently grew a bogus dependency on <sys/systm.h>
for the declaration of spl*, and I prefer to fix the synopsis breakage
by removing a wart instead of adding one.

share/man/man9/VOP_REALLOCBLKS.9

@@ -37,7 +37,6 @@
 .Sh SYNOPSIS
 .Fd #include <sys/param.h>
 .Fd #include <sys/vnode.h>
-.Fd #include <sys/buf.h>
 .Ft int
 .Fn VOP_REALLOCBLKS "struct vnode *vp" "struct cluster_save *buflist"
 .Sh DESCRIPTION
@@ -59,4 +58,3 @@ Zero is returned on success, otherwise an error is returned.
 .Sh AUTHORS
 This man page was written by
 .An Doug Rabson .
-

share/man/man9/VOP_STRATEGY.9

@@ -37,7 +37,6 @@
 .Sh SYNOPSIS
 .Fd #include <sys/param.h>
 .Fd #include <sys/vnode.h>
-.Fd #include <sys/buf.h>
 .Ft int
 .Fn VOP_STRATEGY "struct vnode *vp" "struct buf *bp"
 .Sh DESCRIPTION