Removed leftover @tryghost/jest-snapshot usage
Removed leftover @tryghost/jest-snapshot usage

refs https://github.com/TryGhost/Ghost/commit/fd0a3e80ae3f772cffd435fa662c5313ea2d482d
refs https://github.com/TryGhost/Toolbox/issues/215

- This changes got lost and should have landed with referenced commit

TryGhost/Ghost,e10/Ghost,TryGhost/Ghost,e10/Ghost,TryGhost/Ghost