Auto merge of #11538 - Ms2ger:warnings, r=emilio

Fix some build warnings.

- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [x] These changes do not require tests because refactoring

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components/script/script_thread.rs

@@ -88,7 +88,6 @@ use std::borrow::ToOwned;
 use std::cell::{Cell, RefCell};
 use std::collections::HashSet;
 use std::option::Option;
-use std::ptr;
 use std::rc::Rc;
 use std::result::Result;
 use std::sync::atomic::{Ordering, AtomicBool};