core/mvcc: Kill mvcc-rs crate

We'll just integrate everything in the core.

core/mvcc/mvcc-rs/Cargo.toml

@@ -1,33 +0,0 @@
-[package]
-name = "mvcc-rs"
-version = "0.0.0"
-edition = "2021"
-
-[dependencies]
-anyhow = "1.0.70"
-thiserror = "1.0.40"
-tracing = "0.1.37"
-serde = { version = "1.0.160", features = ["derive"] }
-serde_json = "1.0.96"
-tracing-subscriber = { version = "0", optional = true }
-base64 = "0.21.0"
-aws-sdk-s3 = "0.27.0"
-aws-config = "0.55.2"
-parking_lot = "0.12.1"
-futures = "0.3.28"
-crossbeam-skiplist = "0.1.1"
-tracing-test = "0"
-
-[dev-dependencies]
-criterion = { version = "0.4", features = ["html_reports", "async", "async_futures"] }
-pprof = { version = "0.11.1", features = ["criterion", "flamegraph"] }
-tracing-subscriber = "0"
-mvcc-rs = { path = "." }
-
-[[bench]]
-name = "my_benchmark"
-harness = false
-
-[features]
-default = []
-c_bindings = ["dep:tracing-subscriber"]