chore(clippy): make clippy happy

[mattsse]

rm redundant lint https://github.com/paradigmxyz/evm-inspectors/actions/runs/7855531397/job/21437338557#step:5:19

error: lint group `rust_2018_idioms` has the same priority (0) as a lint
  --> Cargo.toml:19:6
   |
18 | rust.unused_must_use = "deny"
   |      --------------- has the same priority as this lint
19 | rust.rust_2018_idioms = "deny"
   |      ^^^^^^^^^^^^^^^^   ------ has an implicit priority of 0

[mattsse]

@DaniPopes have you seen this before,
no idea what lint groups are or what this error means

[DaniPopes]

Don't know, can't even repro locally anywhere can repro in a new crate. I don't see why this would be a problem since the rust_2018_idioms group doesn't overlap with any other lint defined.

[DaniPopes]

I think you can just safely ignore this with clippy.lint_groups_priority = "allow".