net: sunrpc: Remove the now superfluous sentinel elements from ctl_table array

This commit comes at the tail end of a greater effort to remove the
empty elements at the end of the ctl_table arrays (sentinels) which
will reduce the overall build time size of the kernel and run time
memory bloat by ~64 bytes per sentinel (further information Link :
https://lore.kernel.org/all/[e-mail]/)

* Remove sentinel element from ctl_table structs.

Signed-off-by: Joel Granados <[e-mail]>
Signed-off-by: David S. Miller <[e-mail]>

net/sunrpc/sysctl.c

···
 		.mode		= 0444,
 		.proc_handler	= proc_do_xprt,
 	},
-	{ }
 };
 
 void

net/sunrpc/xprtrdma/svc_rdma.c

···
 		.extra1		= &zero,
 		.extra2		= &zero,
 	},
-	{ },
 };
 
 static void svc_rdma_proc_cleanup(void)

net/sunrpc/xprtrdma/transport.c

···
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec,
 	},
-	{ },
 };
 
 #endif

net/sunrpc/xprtsock.c

···
 		.mode		= 0644,
 		.proc_handler	= proc_dointvec_jiffies,
 	},
-	{ },
 };
 
 /*