Drop TypeConstructor.getAnnotations(), uninherit TypeConstructor from Annotated

The method was unused on TypeConstructor instances, and almost all
implementations returned EMPTY anyway

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/NotFoundClasses.kt

@@ -89,9 +89,7 @@ class NotFoundClasses(private val storageManager: StorageManager, private val mo
     ) : ClassDescriptorBase(storageManager, container, name, SourceElement.NO_SOURCE) {
         private val typeParameters = createTypeParameters(this, numberOfDeclaredTypeParameters)
 
-        private val typeConstructor = ClassTypeConstructorImpl(
-                this, Annotations.EMPTY, /* isFinal = */ true, typeParameters, setOf(module.builtIns.anyType)
-        )
+        private val typeConstructor = ClassTypeConstructorImpl(this, /* isFinal = */ true, typeParameters, setOf(module.builtIns.anyType))
 
         override fun getKind() = ClassKind.CLASS
         override fun getModality() = Modality.FINAL

core/deserialization/src/org/jetbrains/kotlin/serialization/deserialization/descriptors/DeserializedClassDescriptor.kt

@@ -176,8 +176,6 @@ class DeserializedClassDescriptor(
 
         override fun getDeclarationDescriptor() = this@DeserializedClassDescriptor
 
-        override val annotations: Annotations get() = Annotations.EMPTY // TODO
-
         override fun toString() = name.toString()
 
         override val supertypeLoopChecker: SupertypeLoopChecker