cli/patch/review: Obsoletion Warning

As discussed in:
<https://radicle.zulipchat.com/#narrow/channel/369873-Support/topic/new.20to.20reviewing.20patches/with/533862639>

CHANGELOG.md

@@ -13,6 +13,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - The option `rad self --nid` was deprecated in favor of `rad status --only nid`
 - `rad diff` was deprecated in favor of using `git diff`
+- `rad patch review --patch` and `rad patch review --delete` are made obsolete.
+  This functionality never worked as intended, and may be removed before the
+  next major release.
 
 ## New Features
 

crates/radicle-cli/src/commands/patch/review.rs

@@ -83,6 +83,7 @@ pub fn run(
             unified,
             hunk,
         } if by_hunk => {
+            crate::warning::obsolete("rad patch review --patch");
             let mut opts = git::raw::DiffOptions::new();
             opts.patience(true)
                 .minimal(true)
@@ -124,6 +125,7 @@ pub fn run(
             }
         }
         Operation::Delete => {
+            crate::warning::obsolete("rad patch review --delete");
             let name = git::refs::storage::draft::review(profile.id(), &patch_id);
 
             match repository.backend.find_reference(&name) {