Don't accept libraryVersion in syncAPIClient::getVersions()
Don't accept libraryVersion in syncAPIClient::getVersions()

Since /settings is always called first with If-Modified-Since-Version,
it's never necessary to include that in the versions request.

gracile-fr/zotero,retorquere/zotero,rmzelle/zotero,rmzelle/zotero,gracile-fr/zotero,retorquere/zotero,rmzelle/zotero,retorquere/zotero,gracile-fr/zotero