The formatting toolbars that appear may depend on the version of Android that you're using. I'm using Android 6.01, and see what gazumped sees. The top toolbar gives you "Done", "Undo", "Redo" "Toggle formatting toolbar", "Attach" and "Take photo" commands'. The lower toolbar (which is what I think you're seeing) is formatting options (which it toggle-able via the top menu 'A' button).
Windows options are different. You can toggle the note editing toolbar off if you want: Tools / Options / Note / Note Editing Options / "Always show note editing toolbar"
I wanted to reach out to provide some clarification on why you may be seeing different toolbar options in Evernote for Android. Currently, we’re conducting a product test that provides two different versions of the toolbar within the app. The purpose of this test is to use customer feedback to help inform some of our design decisions for future iterations of the app.
This may be why some of you are seeing some differences between your devices and why the A toggle icon is removed in some instances and not on others. Our development team is always looking for ways to improve upon the experience and the feedback you’ve provided in this post goes a long way.
Our apologies for any inconvenience or confusion this may have caused!