fix(Cargo.toml): remove useless skiplist dep

Author: Berrysoft

Cargo.toml

@@ -39,7 +39,6 @@ cfg-if = "1.0.0"
 criterion = "0.5.1"
 crossbeam-channel = "0.5.8"
 crossbeam-queue = "0.3.8"
-crossbeam-skiplist = "0.1.3"
 futures-channel = "0.3.29"
 futures-util = "0.3.29"
 libc = "0.2.149"