Revert "rocksdb 0.22 via a patch"

This reverts commit c05c511938.

rocksdb 0.22 does not work on Windows at this time.

patches/rocksdb/Cargo.toml

@@ -1,21 +0,0 @@
-[package]
-name = "rocksdb"
-version = "0.21.0"
-description = "rocksdb which patches to the latest update"
-license = "MIT"
-repository = "https://github.com/serai-dex/serai/tree/develop/patches/rocksdb"
-authors = ["Luke Parker <lukeparker5132@gmail.com>"]
-keywords = []
-edition = "2021"
-rust-version = "1.63"
-
-[package.metadata.docs.rs]
-all-features = true
-rustdoc-args = ["--cfg", "docsrs"]
-
-[dependencies]
-rocksdb = "0.22"
-
-[features]
-jemalloc = ["rocksdb/jemalloc"]
-snappy = ["rocksdb/snappy"]

patches/rocksdb/src/lib.rs

@@ -1 +0,0 @@
-pub use rocksdb::*;