Auto merge of #69879 - Centril:rollup-ryea91j, r=Centril

Rollup of 10 pull requests

Successful merges:

 - #69475 (Remove the `no_force` query attribute)
 - #69514 (Remove spotlight)
 - #69677 (rustc_metadata: Give decoder access to whole crate store)
 - #69714 (Make PlaceRef take just one lifetime)
 - #69799 (Allow ZSTs in `AllocRef`)
 - #69817 (test(patterns): add patterns feature tests to borrowck test suite)
 - #69836 (Check if output is immediate value)
 - #69847 (clean up E0393 explanation)
 - #69861 (Add note about localization to std::fmt docs)
 - #69877 (Vec::new is const stable in 1.39 not 1.32)

Failed merges:

r? @ghost

Author: bors

src/doc/rustdoc/src/unstable-features.md

@@ -138,27 +138,6 @@ Book][unstable-doc-cfg] and [its tracking issue][issue-doc-cfg].
 [unstable-doc-cfg]: ../unstable-book/language-features/doc-cfg.html
 [issue-doc-cfg]: https://github.com/rust-lang/rust/issues/43781
 
-### Adding your trait to the "Important Traits" dialog
-
-Rustdoc keeps a list of a few traits that are believed to be "fundamental" to a given type when
-implemented on it. These traits are intended to be the primary interface for their types, and are
-often the only thing available to be documented on their types. For this reason, Rustdoc will track
-when a given type implements one of these traits and call special attention to it when a function
-returns one of these types. This is the "Important Traits" dialog, visible as a circle-i button next
-to the function, which, when clicked, shows the dialog.
-
-In the standard library, the traits that qualify for inclusion are `Iterator`, `io::Read`, and
-`io::Write`. However, rather than being implemented as a hard-coded list, these traits have a
-special marker attribute on them: `#[doc(spotlight)]`. This means that you could apply this
-attribute to your own trait to include it in the "Important Traits" dialog in documentation.
-
-The `#[doc(spotlight)]` attribute currently requires the `#![feature(doc_spotlight)]` feature gate.
-For more information, see [its chapter in the Unstable Book][unstable-spotlight] and [its tracking
-issue][issue-spotlight].
-
-[unstable-spotlight]: ../unstable-book/language-features/doc-spotlight.html
-[issue-spotlight]: https://github.com/rust-lang/rust/issues/45040
-
 ### Exclude certain dependencies from documentation
 
 The standard library uses several dependencies which, in turn, use several types and traits from the