refactor(production): remove duplicate expression

Remove a duplicate expression (the left and right sides both check `versionInfo.currentVersion.version`). [48f0957](https://github.com/angular/angular.js/blob/48f0957dde728b050e2d8f76db81cbf12cffd42a/docs/config/services/deployments/production.js#L18) is the most recent commit I found where these expressions differ. My best guess is the duplicated expression can be removed.

Closes #16738