Revert "Add more initialize methods"

This reverts commit f625b33180ad78a5a429955ca6e9ac594909f0a5.
Revert "Update gradle build files"

This reverts commit 537cf3d1299e73be47886884316bebbfc4f27447.
Revert "Allow to provide refreshToken on initialize"

This reverts commit c88c626bf649d342b0d41515fb5f74dedfb93590.