Remove unused private field and format java code

[ath0mas]

Platforms affected

Android

Motivation and Context

Remove private field permissions never used.

Description

• removed unused permissions
• java code format by the IDE (IntelliJ IDEA / Android Studio)

Testing

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary

[erisu]

I just noticed this PR after I have already merged in my PR that practically did the same things.
#607

I will go ahead and close out this PR as completed.
Sorry about that. :(