chore(swarm): Remove deprecated functions (libp2p#3170)

Remove functions deprecated in 0.41.0.

Cargo.toml

@@ -19,7 +19,7 @@ futures = "0.3"
 futures-timer = "3.0"
 instant = "0.1"
 libp2p-core = { version = "0.38.0", path = "../../core" }
-libp2p-swarm = { version = "0.41.0", path = "../../swarm" }
+libp2p-swarm = { version = "0.42.0", path = "../../swarm" }
 libp2p-request-response = { version = "0.23.0", path = "../request-response" }
 log = "0.4"
 rand = "0.8"
@@ -31,7 +31,7 @@ env_logger = "0.10"
 clap = { version = "4.0.13", features = ["derive"] }
 libp2p = { path = "../..", features = ["full"] }
 
-# Passing arguments to the docsrs builder in order to properly document cfg's. 
+# Passing arguments to the docsrs builder in order to properly document cfg's.
 # More information: https://docs.rs/about/builds#cross-compiling
 [package.metadata.docs.rs]
 all-features = true