Remove stray del and TODO (#6867)

The TODO has made it into #6821. I originally just put it there for
bookmarking purposes.

The `del` has been added by #6818 but is also redundant.

control_plane/src/bin/neon_local.rs

@@ -616,7 +616,7 @@ async fn handle_timeline(timeline_match: &ArgMatches, env: &mut local_env::Local
             let tenant_id = get_tenant_id(create_match, env)?;
             let new_branch_name = create_match
                 .get_one::<String>("branch-name")
-                .ok_or_else(|| anyhow!("No branch name provided"))?; // TODO
+                .ok_or_else(|| anyhow!("No branch name provided"))?;
 
             let pg_version = create_match
                 .get_one::<u32>("pg-version")

test_runner/regress/test_ondemand_download.py

@@ -211,7 +211,6 @@ def test_ondemand_download_timetravel(neon_env_builder: NeonEnvBuilder):
     wait_for_upload(client, tenant_id, timeline_id, current_lsn)
     wait_for_upload_queue_empty(pageserver_http, env.initial_tenant, timeline_id)
     client.deletion_queue_flush(execute=True)
-    del current_lsn
     env.pageserver.stop()
     env.pageserver.start()
     # We've shut down the SKs, then restarted the PSes to sever all walreceiver connections;