This PR add `#[deprecated]` attribute to v1 and v2 of the schedule
trait. Proposed in this issue:
https://github.com/paritytech/polkadot-sdk/issues/3676
```rust
#[allow(deprecated)]
#[deprecated = "traits::schedule::v1 is deprecated. Please use v3 instead."]
pub mod v1 {
...
}
#[allow(deprecated)]
#[deprecated = "traits::schedule::v2 is deprecated. Please use v3 instead."]
pub mod v2 {
...
}
```
polkadot address: 19nSqFQorfF2HxD3oBzWM3oCh4SaCRKWt1yvmgaPYGCo71J
---------
Co-authored-by: Oliver Tale-Yazdi <oliver.tale-yazdi@parity.io>
Co-authored-by: Liam Aharon <liam.aharon@hotmail.com>
Tin Chung