extra_unused_type_parameters cannot be applied if fn is used

Summary

.

Reproducer

I tried this code:

use std::backtrace::Backtrace;

#[inline(never)]
fn func_a() -> Backtrace {
    func_b::<u8>()
}
#[inline(never)]
fn func_b<T>() -> Backtrace {
	todo!();
}

fn main() {
    eprint!("{}", func_a());
}

Clippy will suggest to remove the parameter here

warning: type parameter `T` goes unused in function definition
 --> src/main.rs:8:10
  |
8 | fn func_b<T>() -> Backtrace {
  |          ^^^ help: consider removing the parameter
  |
  = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_type_parameters
  = note: `#[warn(clippy::extra_unused_type_parameters)]` on by default

but we still have a call of that function with the parameter in the code which prevent cargo fix from applying the change smoothly :/

If we --broken-code it, rustc will error but we can't apply the suggestion of the error unfortunately

error[E0107]: function takes 0 generic arguments but 1 generic argument was supplied
 --> src/main.rs:5:5
  |
5 |     func_b::<u8>()
  |     ^^^^^^------ help: remove these generics
  |     |
  |     expected 0 generic arguments
  |
note: function defined here, with 0 generic parameters
 --> src/main.rs:8:4
  |
8 | fn func_b() -> Backtrace {
  |    ^^^^^^

Could we make clippy walk through the function calls and suggest the removal of the param in an auto-applicable way there by itself?

Version

clippy 0.1.70 (87a2408 2023-04-11)

Additional Labels

No response

Start with the extra_unused_type_parameters lint and the supplied func_a/func_b reproducer; run Clippy and cargo fix to observe the current suggestion and its failure. Trace how the lint reports the unused parameter and how the generic call is represented, then ensure the resulting diagnostic can be applied without leaving an invalid call, verified against this reproducer.