doc(modules): Remove module style recommendation

Author: ranger-ross

src/items/modules.md

@@ -81,9 +81,6 @@ contents in a file named `mod.rs` within that directory. The above example can
 alternately be expressed with `crate::util`'s contents in a file named
 `util/mod.rs`. It is not allowed to have both `util.rs` and `util/mod.rs`.
 
-> [!NOTE]
-> Prior to `rustc` 1.30, using `mod.rs` files was the way to load a module with nested children. It is encouraged to use the new naming convention as it is more consistent, and avoids having many files named `mod.rs` within a project.
-
 r[items.mod.outlined.path]
 ### The `path` attribute