Remove Bluebird reference from AMD build
Remove Bluebird reference from AMD build

We're removing Bluebird entirely soon, in favor of app developers
choosing their own Promise polyfill (or none). It was already excluded
from the AMD build, but the `define` block was still referencing it and
passing `Promise` as argument.

refs #945
refs #917

theWebalyst/remotestorage.js,remotestorage/remotestorage.js,theWebalyst/remotestorage.js,remotestorage/remotestorage.js,remotestorage/remotestorage.js