Drop has_params.

compiler/rustc_query_system/src/dep_graph/mod.rs

@@ -51,7 +51,7 @@ impl<T: DepContext> HasDepContext for T {
 }
 
 /// Describes the contents of the fingerprint generated by a given query.
-#[derive(PartialEq, Eq, Copy, Clone)]
+#[derive(Debug, PartialEq, Eq, Copy, Clone)]
 pub enum FingerprintStyle {
     /// The fingerprint is actually a DefPathHash.
     DefPathHash,
@@ -78,9 +78,6 @@ pub trait DepKind: Copy + fmt::Debug + Eq + Hash + Send + Encodable<FileEncoder>
     /// Return whether this kind always require evaluation.
     fn is_eval_always(&self) -> bool;
 
-    /// Return whether this kind requires additional parameters to be executed.
-    fn has_params(&self) -> bool;
-
     /// Implementation of `std::fmt::Debug` for `DepNode`.
     fn debug_node(node: &DepNode<Self>, f: &mut fmt::Formatter<'_>) -> fmt::Result;