Removed namespaces from descriptor visitor.

core/descriptors/src/org/jetbrains/jet/lang/descriptors/DeclarationDescriptorVisitor.java

@@ -17,8 +17,6 @@
 package org.jetbrains.jet.lang.descriptors;
 
 public interface DeclarationDescriptorVisitor<R, D> {
-    @Deprecated
-    R visitNamespaceDescriptor(NamespaceDescriptor descriptor, D data);
 
     R visitPackageFragmentDescriptor(PackageFragmentDescriptor descriptor, D data);
 

core/descriptors/src/org/jetbrains/jet/lang/descriptors/impl/AbstractNamespaceDescriptorImpl.java

@@ -54,6 +54,6 @@ public abstract class AbstractNamespaceDescriptorImpl extends DeclarationDescrip
 
     @Override
     public <R, D> R accept(DeclarationDescriptorVisitor<R, D> visitor, D data) {
-        return visitor.visitNamespaceDescriptor(this, data);
+        throw new UnsupportedOperationException("namespaces are retired");
     }
 }

core/descriptors/src/org/jetbrains/jet/lang/descriptors/impl/DeclarationDescriptorVisitorEmptyBodies.java

@@ -38,11 +38,6 @@ public class DeclarationDescriptorVisitorEmptyBodies<R, D> implements Declaratio
         return visitDeclarationDescriptor(descriptor, data);
     }
 
-    @Override
-    public R visitNamespaceDescriptor(NamespaceDescriptor descriptor, D data) {
-        return visitDeclarationDescriptor(descriptor, data);
-    }
-
     @Override
     public R visitPackageFragmentDescriptor(PackageFragmentDescriptor descriptor, D data) {
         return visitDeclarationDescriptor(descriptor, data);

core/descriptors/src/org/jetbrains/jet/renderer/DescriptorRendererImpl.java

@@ -744,11 +744,6 @@ public class DescriptorRendererImpl implements DescriptorRenderer {
             return null;
         }
 
-        @Override
-        public Void visitNamespaceDescriptor(NamespaceDescriptor namespaceDescriptor, StringBuilder builder) {
-            return null;
-        }
-
         @Override
         public Void visitPackageFragmentDescriptor(
                 PackageFragmentDescriptor descriptor, StringBuilder builder