misc: disable goconst linter, remove nolint in internal/compiler (#3585)

* golangci-lint: remove goconst linter

We've debated turning it to 10, or removing it alltogether; landed
at the fact that if the number of occurrences really is 10+, it'll
be noted in code review anyways.

* internal/compiler/wasm: more selectively disable deadcode/varcheck linter

Signed-off-by: Stephan Renatus <stephan.renatus@gmail.com>