jprobes: remove JPROBE_ENTRY()

AFAICT now that jprobe.entry is a void *, JPROBE_ENTRY doesn't do anything
useful - so remove it ..

I've left a do-nothing version so that out-of-tree jprobes code will still
compile without modifications.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Cc: Prasanna S Panchamukhi <prasanna@in.ibm.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index f37d592..b76398d 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -130,7 +130,7 @@
 	.kp = {
 		.symbol_name	= "tcp_rcv_established",
 	},
-	.entry	= JPROBE_ENTRY(jtcp_rcv_established),
+	.entry	= jtcp_rcv_established,
 };
 
 static int tcpprobe_open(struct inode * inode, struct file * file)