remove default features from tokio-rustls dependency

Author: lovasoa

sqlx-rt/Cargo.toml

@@ -34,7 +34,7 @@ async-native-tls = { version = "0.5.0", optional = true }
 futures-rustls = { version = "0.26", optional = true }
 async-std = { version = "1.7.0", features = ["unstable"], optional = true }
 tokio-native-tls = { version = "0.3.0", optional = true }
-tokio-rustls = { version = "0.26", optional = true }
+tokio-rustls = { version = "0.26", optional = true, default-features = false }
 native-tls = { version = "0.2.4", optional = true }
 once_cell = { version = "1.4", features = ["std"], optional = true }