[dev.cc] test: disable rotate tests

They use too much memory in the current Go compiler draft.
This should fix some builders.

Reenabling is #9933.

Change-Id: Ib5ef348b2c55d2012ffed765f2a6df99dec171f4
Reviewed-on: https://go-review.googlesource.com/5302Reviewed-by: Russ Cox <rsc@golang.org>

test/rotate0.go

+// skip
+
 // runoutput ./rotate.go
 
 // Copyright 2013 The Go Authors.  All rights reserved.

test/rotate1.go

+// skip
+
 // runoutput ./rotate.go
 
 // Copyright 2013 The Go Authors.  All rights reserved.

test/rotate2.go

+// skip
+
 // runoutput ./rotate.go
 
 // Copyright 2013 The Go Authors.  All rights reserved.

test/rotate3.go

+// skip
+
 // runoutput ./rotate.go
 
 // Copyright 2013 The Go Authors.  All rights reserved.