The TaiG UICache package that came with version 2.0.0 of the TaiG jailbreak for iOS 8.1.3-8.3 is no longer required. However, as TaiG marked the package "essential", there was no good way to get rid of it: you could not uninstall it, and new packages cannot "replace" it; this is an empty package that replaces it with nothing. Once installed, this new package is no longer "essential" and can be uninstalled at any time.