actually revert changes

Author: jamesbt365

examples/e01_basic_ping_bot/Cargo.toml

@@ -6,4 +6,4 @@ edition.workspace = true
 
 [dependencies]
 serenity = { path = "../../", default-features = false, features = ["gateway", "model", "rustls_backend"] }
-tokio = { version = "1.0", features = ["macros", "rt-multi-thread"] }
+tokio = { version = "1.0", features = ["macros", "rt-multi-thread"] }