[parser] remove %catch parsing

src/ast/prettyprinter.cc

Index: src/ast/prettyprinter.cc
diff --git a/src/ast/prettyprinter.cc b/src/ast/prettyprinter.cc
index 2f939554abfa3f68df9b96afb6616366acd21aa3..59690a856b17d20284263552ce29143c4aea8f54 100644
--- a/src/ast/prettyprinter.cc
+++ b/src/ast/prettyprinter.cc
@@ -879,15 +879,16 @@ void AstPrinter::PrintTryStatement(TryStatement* node) {
     case HandlerTable::CAUGHT:
       prediction = "CAUGHT";
       break;
-    case HandlerTable::PROMISE:
-      prediction = "PROMISE";
-      break;
     case HandlerTable::DESUGARING:
       prediction = "DESUGARING";
       break;
     case HandlerTable::ASYNC_AWAIT:
       prediction = "ASYNC_AWAIT";
       break;
+    case HandlerTable::PROMISE:
+      // Catch prediction resulting in promise rejections aren't
+      // parsed by the parser.
+      UNREACHABLE();
   }
   Print(" %s\n", prediction);
 }