Remove Pin UniquePtr support
diff --git a/syntax/impls.rs b/syntax/impls.rs
index c11c386..a9c48c3 100644
--- a/syntax/impls.rs
+++ b/syntax/impls.rs
@@ -81,36 +81,29 @@
 impl PartialEq for Ty1 {
     fn eq(&self, other: &Ty1) -> bool {
         let Ty1 {
-            pinned,
             name,
             langle: _,
             inner,
             rangle: _,
-            pin_tokens: _,
         } = self;
         let Ty1 {
-            pinned: pinned2,
             name: name2,
             langle: _,
             inner: inner2,
             rangle: _,
-            pin_tokens: _,
         } = other;
-        pinned == pinned2 && name == name2 && inner == inner2
+        name == name2 && inner == inner2
     }
 }
 
 impl Hash for Ty1 {
     fn hash<H: Hasher>(&self, state: &mut H) {
         let Ty1 {
-            pinned,
             name,
             langle: _,
             inner,
             rangle: _,
-            pin_tokens: _,
         } = self;
-        pinned.hash(state);
         name.hash(state);
         inner.hash(state);
     }