Revert "Merge pull request #18505 from zbraniecki/999195-cleanup-mozl10n-emergency-call"

- Missing new tests
- Not reviewed by a peer

This reverts commit b64555b9ed961923b923239e96f87d6ba83cf951, reversing
changes made to 18fd4d436797ede7503cd753a22b5a9804282042.