ssh/test: skip test on js/wasm

This should fix the build on the js/wasm builder.

Change-Id: I02a0ae00dcfd2691fbb4c7cf038b12988f3b4b85
Reviewed-on: https://go-review.googlesource.com/c/crypto/+/172717
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>

ssh/test/dial_unix_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !windows,!solaris,!aix
+// +build !windows,!solaris,!aix,!js
 
 package test
 

ssh/test/session_test.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !windows,!solaris,!aix
+// +build !windows,!solaris,!aix,!js
 
 package test