Remove deprecated arguments

[anthonydahanne]

BP_BOOT_NATIVE_IMAGE_BUILD_ARGUMENTS and BP_BOOT_NATIVE_IMAGE

They've been deprecated for 2 years now

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[dmikusa]

I think this looks good.

@pivotal-david-osullivan I wanted to confirm with you on this? Major or minor change? I think technically we're supposed to use major with removals, but this has also been deprecated for 2 years. We could stick with major and just hold this until we're ready for another major release? It's not urgent to merge this.

Thoughts?

[pivotal-david-osullivan]

I think that we should stick to convention and go with major, especially given it's not urgent to get it merged. So yes, once we have enough for a new major we can pull this in 👍