Remove "merged" from commit details view
Remove "merged" from commit details view

Fixes https://github.com/Shopify/shipit-engine/issues/425.
Shopify/shipit-engine,Shopify/shipit-engine,perobertson/shipit-engine,ershad/shipit-engine,ershad/shipit-engine,ershad/shipit-engine,Shopify/shipit-engine,ershad/shipit-engine,perobertson/shipit-engine,perobertson/shipit-engine,Shopify/shipit-engine,perobertson/shipit-engine,ershad/shipit-engine,perobertson/shipit-engine,Shopify/shipit-engine