Rust

Remove dead code (`EpiIntegration::frame_start`) (#4790) #12109

Job	Run time
android	24s
Check wasm32 + wasm-bindgen	2m 27s
Format + check + test	5m 16s
cargo-deny aarch64-apple-darwin	38s
Check Windows	1m 37s
cargo-deny aarch64-linux-android	41s
cargo-deny i686-pc-windows-gnu	43s
cargo-deny i686-pc-windows-msvc	38s
cargo-deny i686-unknown-linux-gnu	42s
cargo-deny wasm32-unknown-unknown	44s
cargo-deny x86_64-apple-darwin	40s
cargo-deny x86_64-pc-windows-gnu	42s
cargo-deny x86_64-pc-windows-msvc	42s
cargo-deny x86_64-unknown-linux-gnu	38s
cargo-deny x86_64-unknown-linux-musl	42s
cargo-deny x86_64-unknown-redox	38s
	17m 52s

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