Update hex-literal version, simplify imports and remove unused dependencies (#2371)

substrate/srml/council/Cargo.toml

@@ -17,7 +17,7 @@ democracy = { package = "srml-democracy", path = "../democracy", default-feature
 system = { package = "srml-system", path = "../system", default-features = false }
 
 [dev-dependencies]
-hex-literal = "0.1.0"
+hex-literal = "0.2.0"
 balances = { package = "srml-balances", path = "../balances" }
 
 [features]

substrate/srml/council/src/motions.rs

@@ -205,7 +205,7 @@ mod tests {
 	use crate::tests::{Call, Origin, Event as OuterEvent};
 	use srml_support::{Hashable, assert_ok, assert_noop};
 	use system::{EventRecord, Phase};
-	use hex_literal::{hex, hex_impl};
+	use hex_literal::hex;
 
 	#[test]
 	fn motions_basic_environment_works() {