JVM: no nullability annotations on private and synthetic fields

compiler/testData/codegen/box/coroutines/tailCallOptimizations/unit/override5.txt

@@ -59,7 +59,7 @@ public final class Override5Kt$inlineMe$1 {
 
 @kotlin.Metadata
 public final class Override5Kt {
-    private static @org.jetbrains.annotations.Nullable field c: kotlin.coroutines.Continuation
+    private static field c: kotlin.coroutines.Continuation
     inner class Override5Kt$box$1
     inner class Override5Kt$inlineMe$1
     public final static @org.jetbrains.annotations.NotNull method box(): java.lang.String