cmd/compile: remove Node.Ntest, Node.Stkdelta

$ sizeof -p cmd/compile/internal/gc Node
Node 272
$

Change-Id: I3d9b67eebfc0be0a4b9768d3de3dc76300abd89c
Reviewed-on: https://go-review.googlesource.com/10521
Reviewed-by: Ian Lance Taylor <iant@golang.org>
Reviewed-by: Josh Bleecher Snyder <josharian@gmail.com>
diff --git a/src/cmd/compile/internal/gc/init.go b/src/cmd/compile/internal/gc/init.go
index 92bfeec..b8077a2 100644
--- a/src/cmd/compile/internal/gc/init.go
+++ b/src/cmd/compile/internal/gc/init.go
@@ -123,13 +123,13 @@
 	// (3)
 	a := Nod(OIF, nil, nil)
 
-	a.Ntest = Nod(ONE, gatevar, Nodintconst(0))
+	a.Left = Nod(ONE, gatevar, Nodintconst(0))
 	r = list(r, a)
 
 	// (4)
 	b := Nod(OIF, nil, nil)
 
-	b.Ntest = Nod(OEQ, gatevar, Nodintconst(2))
+	b.Left = Nod(OEQ, gatevar, Nodintconst(2))
 	b.Nbody = list1(Nod(ORETURN, nil, nil))
 	a.Nbody = list1(b)