Remove extra revokeUriPermission call in FileSystemProvider

Currently, DocumentsProvider already handles the revokeUriPermission
for the original Uri in the renameDocument case. Don't need to
call revokeUriPermission in FileSystemProvider. It causes the new Uri
to not be granted the original permissions.

Flag: EXEMPT Bug fix
Bug: 402270863
Test: Manual
Change-Id: I53da748c3f9cf1fe0575692ccf313f6528b40e38