crates.io: remove outdated ops info (#1059)

Author: LawnGnome

src/SUMMARY.md

@@ -69,8 +69,6 @@
     - [Working Areas](./compiler/working-areas.md)
 - [rustc-dev-guide](./rustc-dev-guide/index.md)
 - [crates.io](./crates-io/index.md)
-    - [Crate removal](./crates-io/crate-removal.md)
-    - [Database maintenance](./crates-io/db-maintenance.md)
 - [docs.rs](./docs-rs/index.md)
   - [Adding dependencies to the build environment](./docs-rs/add-dependencies.md)
   - [Self-hosting a docs.rs instance](./docs-rs/self-hosting.md)

src/crates-io/crate-removal.md

@@ -1,3 +1,14 @@
 # crates.io
 
-This section documents the processes of the crates.io team.
+crates.io hosts crates for the Rust ecosystem.
+
+## External links
+
+- Source code: [`rust-lang/crates.io`][repo]
+- Hosted at: https://crates.io/
+- Maintainers: [crates.io team][maintainers]
+- [Ops guide][ops] (only available to team members)
+
+[maintainers]: https://rust-lang.org/governance/teams/dev-tools/#team-crates-io
+[ops]: https://ops-guide.crates.io/
+[repo]: https://github.com/rust-lang/crates.io