Disable terser for server build (#6951)
Disable terser for server build (#6951)

Checking the stats first. But at least until https://github.com/zeit/next.js/issues/6950 is figured out we should disable it for serverless builds as it's also disabled for zeit.co serverless builds.
zeit/next.js,BlancheXu/test,JeromeFitz/next.js,JeromeFitz/next.js,BlancheXu/test,azukaru/next.js,JeromeFitz/next.js,JeromeFitz/next.js,flybayer/next.js,flybayer/next.js,flybayer/next.js,flybayer/next.js,azukaru/next.js,azukaru/next.js,zeit/next.js,zeit/next.js,azukaru/next.js,BlancheXu/test