Remove unused dev dependencies
Remove unused dev dependencies

lakenen/viewer.js,vdclouis/viewer.js,box/viewer.js,box/viewer.js,lakenen/viewer.js,denodster/viewer.js,denodster/viewer.js,box/viewer.js,denodster/viewer.js,vdclouis/viewer.js,lakenen/viewer.js,vdclouis/viewer.js