Remove item if don't readonly
remove(key)
This method return a boolean
OhMyCache.Local.set('key', 'value')
OhMyCache.Local.get('key') // 'value'
OhMyCache.Local.remove('key') // true
OhMyCache.Local.get('key') // null
// ReadOnly
OhMyCache.Local.set('key', 'value', {readonly: true})
OhMyCache.Local.get('key') // 'value'
OhMyCache.Local.remove('key') // false
OhMyCache.Local.get('key') // 'value'