`unused_unit` suggestion includes blank lines

[xtqqczze]

Summary

Clippy incorrectly formats a function body when removing a redundant unit expression (()), leaving behind an empty line.

Reproducer

Code:

pub fn foo(x: usize) -> () {
    let _ = x;
    ()
}

Current output:

pub fn foo(x: usize) {
    let _ = x;
    
}

Desired output:

pub fn foo(x: usize) {
    let _ = x;
}

Version

clippy 0.1.97 (36ba2c7712 2026-04-23)