Warning: unnecessary lifetime parameter `'a`

[abhi3700]

substrate/primitives/runtime/src/curve.rs

Line 29 in 85415fb

pub struct PiecewiseLinear<'a> {

gives this error:

❯ cargo build -r
warning: unnecessary lifetime parameter `'a`
  --> primitives/runtime/src/curve.rs:29:28
   |
29 | pub struct PiecewiseLinear<'a> {
   |                            ^^
   |
   = help: you can use the `'static` lifetime directly, in place of `'a`

warning: `sp-runtime` (lib) generated 1 warning

### Tasks

[ggwpez]

Yep please go ahead.
There could be more of these cases - depending on your version of Clippy.

[bkchr]

This code is correct, you need to upgrade your rustc.

See: #14096

[abhi3700]

Thanks! I updated & no such warning now.