Cleanup descriptors.proto, regenerate

- move enums and messages nested in Callable to top level, since they're likely
  to be reused in other messages soon
- delete obsolete comments: some did not any value, some became obsolete with
  custom options ("id in StringTable" -> name_id_in_table)

js/js.serializer/src/js.proto

@@ -30,7 +30,7 @@ extend Callable {
   optional Annotation.Argument.Value compile_time_value = 131;
 }
 
-extend Callable.ValueParameter {
+extend ValueParameter {
   repeated Annotation parameter_annotation = 130;
 }
 

js/js.serializer/src/org/jetbrains/kotlin/serialization/js/JsProtoBuf.java

@@ -1509,14 +1509,14 @@ public final class JsProtoBuf {
         com.google.protobuf.WireFormat.FieldType.MESSAGE);
   public static final int PARAMETER_ANNOTATION_FIELD_NUMBER = 130;
   /**
-   * <code>extend .org.jetbrains.kotlin.serialization.Callable.ValueParameter { ... }</code>
+   * <code>extend .org.jetbrains.kotlin.serialization.ValueParameter { ... }</code>
    */
   public static final
     com.google.protobuf.GeneratedMessageLite.GeneratedExtension<
-      org.jetbrains.kotlin.serialization.ProtoBuf.Callable.ValueParameter,
+      org.jetbrains.kotlin.serialization.ProtoBuf.ValueParameter,
       java.util.List<org.jetbrains.kotlin.serialization.ProtoBuf.Annotation>> parameterAnnotation = com.google.protobuf.GeneratedMessageLite
           .newRepeatedGeneratedExtension(
-        org.jetbrains.kotlin.serialization.ProtoBuf.Callable.ValueParameter.getDefaultInstance(),
+        org.jetbrains.kotlin.serialization.ProtoBuf.ValueParameter.getDefaultInstance(),
         org.jetbrains.kotlin.serialization.ProtoBuf.Annotation.getDefaultInstance(),
         null,
         130,

js/js.serializer/src/org/jetbrains/kotlin/serialization/js/KotlinJavascriptAnnotationAndConstantLoader.kt

@@ -53,7 +53,7 @@ class KotlinJavascriptAnnotationAndConstantLoader(
             nameResolver: NameResolver,
             kind: AnnotatedCallableKind,
             parameterIndex: Int,
-            proto: ProtoBuf.Callable.ValueParameter
+            proto: ProtoBuf.ValueParameter
     ): List<AnnotationDescriptor> {
         val annotations = proto.getExtension(JsProtoBuf.parameterAnnotation).orEmpty()
         return annotations.map { proto -> deserializer.deserializeAnnotation(proto, nameResolver) }

js/js.serializer/src/org/jetbrains/kotlin/serialization/js/KotlinJavascriptSerializerExtension.kt

@@ -50,7 +50,7 @@ public class KotlinJavascriptSerializerExtension : SerializerExtension() {
         }
     }
 
-    override fun serializeValueParameter(descriptor: ValueParameterDescriptor, proto: ProtoBuf.Callable.ValueParameter.Builder) {
+    override fun serializeValueParameter(descriptor: ValueParameterDescriptor, proto: ProtoBuf.ValueParameter.Builder) {
         for (annotation in descriptor.annotations) {
             proto.addExtension(JsProtoBuf.parameterAnnotation, annotationSerializer.serializeAnnotation(annotation))
         }