Temporarily stop building mumpy wheel

It turns out we aren't actually using this wheel since we are still
installing the deb python-numpy, and building numpy takes several
minutes which is a lot considering we do it on every single dsvm job.

So until we have wheel caching in place, and are actually using the
version we build ourselves, stop wasting time.

Change-Id: I7643c55598e5ecc29ea708c537818b37a8047d4b
diff --git a/files/venv-requirements.txt b/files/venv-requirements.txt
index 8417b92..e473a2f 100644
--- a/files/venv-requirements.txt
+++ b/files/venv-requirements.txt
@@ -2,7 +2,7 @@
 lxml
 MySQL-python
 netifaces
-numpy
+#numpy    # slowest wheel by far, stop building until we are actually using the output
 posix-ipc
 psycopg2
 pycrypto