Revert "term: specify line-height in px"
Revert "term: specify line-height in px"

This reverts commit b7362d18aa6e86f98b36ec26bdbb04c4d9652a46.

Reasoning: https://github.com/zeit/hyper/issues/1630

MartyGentillon/hyper,chabou/hyper,derrickpelletier/hyper,chabou/hyper,spncrgr/hyper,martinvd/hyper,derrickpelletier/hyper,MartyGentillon/hyper,wilsontayar/hyper,zeit/hyper,zeit/hyper,martinvd/hyper,whitelynx/hyperterm,reslaurentii/hyper,whitelynx/hyperterm,rickycodes/hyper,wilsontayar/hyper,zeit/hyper,chabou/hyper,ppot/hyper,ppot/hyper,reslaurentii/hyper,spncrgr/hyper,KunalKene1797/hyper,zeit/hyper,ppot/hyper,rickycodes/hyper,KunalKene1797/hyper,zeit/hyperterm,zeit/hyperterm