Revert "Bug 975161 - Ensure SIM Pin inputs are visible. r=vingetun" for failures in system/test/unit/sim_settings_helper_test.js

This reverts commit fa25ec9e9491388beee916b35ad3c59cbfee2f30.
Bug 972600 - [B2G][Contacts] After merging duplicate contacts selecting edit contact button brings up 'Add contact' screen