chore(stdlib): rm unsupported doc comments

noir_stdlib/src/merkle/smt.nr

@@ -5,8 +5,8 @@ struct SparseMerkleTree {
 }
 
 impl SparseMerkleTree {
-    /// Constrains that the new leaf is located in the new tree at an index
-    /// that previously held the default value in the old tree.
+    // Constrains that the new leaf is located in the new tree at an index
+    // that previously held the default value in the old tree.
     fn insert(self,
         old_root: Field,
         new_root: Field,
@@ -24,8 +24,8 @@ impl SparseMerkleTree {
         );
     }
 
-    /// Constrains that the new tree holds the default value at the same
-    /// index that the old tree held the old leaf.
+    // Constrains that the new tree holds the default value at the same
+    // index that the old tree held the old leaf.
     fn delete(
         self,
         old_root: Field,
@@ -44,9 +44,9 @@ impl SparseMerkleTree {
         );
     }
 
-    /// Constrains that the changed leaf's before and after values are
-    /// consistent with the given merkle roots, and that the leaf at the
-    /// specified index is the only difference between the trees.
+    // Constrains that the changed leaf's before and after values are
+    // consistent with the given merkle roots, and that the leaf at the
+    // specified index is the only difference between the trees.
     fn update(
         old_root: Field,
         old_leaf: Field,