Removed old partial rest-mapping blueprint.
Removed old partial rest-mapping blueprint.

Zhaoliang put together one that's more complete (rest_api.md); we're
going to go with that.

henn/hil_sahil,henn/haas,apoorvemohan/haas,henn/hil_sahil,kylehogan/hil,apoorvemohan/haas,CCI-MOC/haas,kylehogan/hil,meng-sun/hil,lokI8/haas,SahilTikale/switchHaaS,henn/hil,kylehogan/haas,SahilTikale/haas,meng-sun/hil,henn/hil