Will the Package Disabler app available in the Playstore serve your purpose?
Just disable it, that's what I did.
How did you disable it? It doesn't have the disable option in the app manager, and continues to update and launch itself despite my uninstalling to factory.
It is driving me nuts.
If you go into the app and turn off simple pay, the tab will not show. If you can uninstall or disable it within app manager, I think you'll need package disabler.