refactor: remove testing & benchmarking from meta

Author: jsjoeio

src/meta.md

@@ -4,9 +4,5 @@ Some topics aren't exactly relevant to how you program but provide you
 tooling or infrastructure support which just makes things better for
 everyone. These topics include:
 
-* Documentation: Generate library documentation for users via the included
-`rustdoc`.
-* Testing: Create testsuites for libraries to give confidence that your
-library does exactly what it's supposed to.
-* Benchmarking: Create benchmarks for functionality to be confident that
-they run quickly.
+- Documentation: Generate library documentation for users via the included
+  `rustdoc`.