chore: remove abort

[Uzlopak]

I dont know what the point is to have this unreachable code in the result. It increases the size of the generated wasm files.

[Uzlopak]

@mcollina @ShogunPanda

[ShogunPanda]

@indutny Any hint on this?

[indutny]

The point of these unreachable is to help guide compiler through the difficult code. I agree that we can save some space by not doing abort() calls. Here's a different approach https://github.com/nodejs/llparse/pull/76