Revert "Bug 1003045 - hide 'Sharing using USB' toggle if the storage isn't"

This reverts commit cf0a961f62f36b38af86f8a27b7bfc642b86e3ac.
Merge pull request #20603 from comoyo/revert1003045

Revert "Bug 1003045 - hide 'Sharing using USB' toggle if the storage isn't"