AsyncStorage Warning

[Matiassimone]

Warning generated by the AsyncStorage deprecation

Hello, I am creating the next issue to warn that in the new versions of RN, the library of AsyncStorage has been separated, which generates a Warning about the deprecation of AsyncStorage.

• React Native version 0.59

I have created the following PR to solve this error, eliminating an unnecessary import in the project code. #390

[Traviskn]

resolved by #354