api: Remove unneeded extra-traits syn feature

crates/ruma-api-macros/Cargo.toml

@@ -18,7 +18,7 @@ edition = "2018"
 proc-macro-crate = "1.0.0"
 proc-macro2 = "1.0.24"
 quote = "1.0.8"
-syn = { version = "1.0.57", features = ["full", "extra-traits", "visit"] }
+syn = { version = "1.0.57", features = ["full", "visit"] }
 
 [lib]
 proc-macro = true

crates/ruma-api-macros/src/api/request.rs

@@ -13,7 +13,7 @@ use super::metadata::Metadata;
 mod incoming;
 mod outgoing;
 
-#[derive(Debug, Default)]
+#[derive(Default)]
 pub(super) struct RequestLifetimes {
     pub body: BTreeSet<Lifetime>,
     pub path: BTreeSet<Lifetime>,

crates/ruma-api-macros/src/util.rs

@@ -37,5 +37,5 @@ pub(crate) fn import_ruma_api() -> TokenStream {
 }
 
 pub(crate) fn is_cfg_attribute(attr: &Attribute) -> bool {
-    attr.style == AttrStyle::Outer && attr.path.is_ident("cfg")
+    matches!(attr.style, AttrStyle::Outer) && attr.path.is_ident("cfg")
 }