User attributes not getting deleted after app uninstall

[Gopats]

When user uninstalls the application, the user profile is not getting deleted from phone memory. When user reinstalls app, the app uses old user data to try and log in instead of asking user to enter login credentials.

[gauravr007]

When the app is uninstalled, the app data that was stored via SharedPrefernces, does get deleted.
I believe the problem here must have been that auto-backup on the phone backed up the data for the app to the cloud and restored it on the phone when the app was installed again.

See - https://stackoverflow.com/questions/15873066/how-to-remove-shared-preference-while-application-uninstall-in-android

and https://developer.android.com/guide/topics/data/backup.html
https://developer.android.com/guide/topics/data/autobackup.html

Apps that target Android 6.0 (API level 23) or higher are automatically enabled for Auto Backup.

Will fix this bug by disabling backup for the app in the AndroidManifest.xml.

[gauravr007]

We can later enable backup and pick what app data should and should not be backed up

[gauravr007]

Resolved via commit a558da2