Push back against aligned loads/stores

[DenisYaroshevskiy]

This is a suggestion for simplification.

Arm has no aligned loads/stores, so this does nothing.
On modern x86 (I don't know how modern we talking) it's not recommended to use aligned operations.
Compiler can recognise __assume aligned and such if someone really wants it.

I believe you mentioned at some point that in your code you just call memcpy all the time.

So, how about we drop everything about alignment on loads stores?

Note: eve has aligned loads but it's because we know that when the pointer is aligned we don't need to do any masking on loads. I am not sure if the compiler is allowed to do that and even if its, "assume_aligned" should be good enough.