Auto merge of #23499 - est31:unused_code_removal_3, r=jdm

Remove unused code (3/N)

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Third PR in a series of PRs to remove unused/dead code from servo, powered by an (upcoming) tool of mine. Please take a look and tell me if you want to keep something.

* First PR: #23477
* Second PR: #23498

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- [x] `./mach build -d` does not report any errors
- [x] `./mach test-tidy` does not report any errors
- [ ] These changes fix #___ (GitHub issue number if applicable)

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- [ ] There are tests for these changes OR
- [x] These changes do not require tests because they only remove dead code

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1 files changed, 0 insertions, 4 deletions

diff --git a/components/script_traits/lib.rs b/components/script_traits/lib.rs
index d5a030323f6..de05de657bd 100644
--- a/components/script_traits/lib.rs
+++ b/components/script_traits/lib.rs
@@ -550,10 +550,6 @@ pub type NsDuration = Length<u64, Nanoseconds>;
 pub fn precise_time_ms() -> MsDuration {
     Length::new(time::precise_time_ns() / (1000 * 1000))
 }
-/// Returns the duration since an unspecified epoch measured in ns.
-pub fn precise_time_ns() -> NsDuration {
-    Length::new(time::precise_time_ns())
-}
 
 /// Data needed to construct a script thread.
 ///