Use logcat instead of println

[scana]

Noticed that print-lines were added 4.9.5 to print out logs.
Please do let me know if you would rather see this reported as Log.e.

[daniel-statsig]

Hey @scana, thanks for the contribution. Was this not logging to the correct location for you? Do we need to audit the entire SDK for println?

[scana]

Hi @daniel-statsig, no need for audit, it's just for convenience. println will tag the log as System.out so adding [Statsig] seems like an artificial thing to add.