Auto merge of #24335 - sinkuu:unuesd_deps, r=SimonSapin

Remove unused dependencies

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Removes unused crates from `Cargo.toml` to (possibly) shorten build time.

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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 no semantic changes

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tests/unit/metrics/Cargo.toml

@@ -13,10 +13,8 @@ doctest = false
 [dependencies]
 gfx_traits = {path = "../../../components/gfx_traits"}
 ipc-channel = "0.12"
-layout = {path = "../../../components/layout", package = "layout_2013"}
 metrics = {path = "../../../components/metrics"}
 msg = {path = "../../../components/msg"}
 profile_traits = {path = "../../../components/profile_traits"}
 servo_url = {path = "../../../components/url"}
 time = "0.1.12"
-webrender_api = {git = "https://github.com/servo/webrender"}

tests/unit/style/Cargo.toml

@@ -10,7 +10,6 @@ path = "lib.rs"
 doctest = false
 
 [dependencies]
-byteorder = "1.0"
 app_units = "0.7"
 cssparser = "0.25"
 euclid = "0.20"