SUNRPC: remove extraneous header inclusions

include/linux/sunrpc/clnt.h already includes include/linux/sunrpc/xprt.h.
We can remove xprt.h from source files that already include clnt.h.
Likewise include/linux/sunrpc/timer.h.

Test plan:
Compile kernel with CONFIG_NFS enabled.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/mount_clnt.c b/fs/nfs/mount_clnt.c
index 445abb4..41274874 100644
--- a/fs/nfs/mount_clnt.c
+++ b/fs/nfs/mount_clnt.c
@@ -14,7 +14,6 @@
 #include <linux/net.h>
 #include <linux/in.h>
 #include <linux/sunrpc/clnt.h>
-#include <linux/sunrpc/xprt.h>
 #include <linux/sunrpc/sched.h>
 #include <linux/nfs_fs.h>
 
diff --git a/include/linux/nfs_xdr.h b/include/linux/nfs_xdr.h
index 2426b11..0f33e62 100644
--- a/include/linux/nfs_xdr.h
+++ b/include/linux/nfs_xdr.h
@@ -1,7 +1,6 @@
 #ifndef _LINUX_NFS_XDR_H
 #define _LINUX_NFS_XDR_H
 
-#include <linux/sunrpc/xprt.h>
 #include <linux/nfsacl.h>
 
 /*
diff --git a/net/sunrpc/pmap_clnt.c b/net/sunrpc/pmap_clnt.c
index 3eee8e9..523f0e8 100644
--- a/net/sunrpc/pmap_clnt.c
+++ b/net/sunrpc/pmap_clnt.c
@@ -15,7 +15,6 @@
 #include <linux/uio.h>
 #include <linux/in.h>
 #include <linux/sunrpc/clnt.h>
-#include <linux/sunrpc/xprt.h>
 #include <linux/sunrpc/sched.h>
 
 #ifdef RPC_DEBUG
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c
index 015ffe4..ecf3663 100644
--- a/net/sunrpc/sched.c
+++ b/net/sunrpc/sched.c
@@ -21,7 +21,6 @@
 #include <linux/mutex.h>
 
 #include <linux/sunrpc/clnt.h>
-#include <linux/sunrpc/xprt.h>
 
 #ifdef RPC_DEBUG
 #define RPCDBG_FACILITY		RPCDBG_SCHED
diff --git a/net/sunrpc/timer.c b/net/sunrpc/timer.c
index bcbdf64..8142fdb 100644
--- a/net/sunrpc/timer.c
+++ b/net/sunrpc/timer.c
@@ -19,8 +19,6 @@
 #include <linux/unistd.h>
 
 #include <linux/sunrpc/clnt.h>
-#include <linux/sunrpc/xprt.h>
-#include <linux/sunrpc/timer.h>
 
 #define RPC_RTO_MAX (60*HZ)
 #define RPC_RTO_INIT (HZ/5)