[AST] Remove stale comment from TypeAliasDecl::setUnderlyingType (#18601)

jrose-apple · web-flow · commit 1543f15081bc · 2018-08-09T15:45:49.000-07:00
This is used on all paths now.
diff --git a/include/swift/AST/Decl.h b/include/swift/AST/Decl.h
@@ -2696,8 +2696,6 @@ class TypeAliasDecl : public GenericTypeDecl {
     return UnderlyingTy;
   }
 
-  /// Set the underlying type, for deserialization and synthesized
-  /// aliases.
   void setUnderlyingType(Type type);
 
   /// For generic typealiases, return the unbound generic type.

Original file line number	Diff line number	Diff line change
`@@ -2696,8 +2696,6 @@ class TypeAliasDecl : public GenericTypeDecl {`
`2696`	`2696`	`return UnderlyingTy;`
`2697`	`2697`	`}`
`2698`	`2698`
`2699`		`- /// Set the underlying type, for deserialization and synthesized`
`2700`		`- /// aliases.`
`2701`	`2699`	`void setUnderlyingType(Type type);`
`2702`	`2700`
`2703`	`2701`	`/// For generic typealiases, return the unbound generic type.`