Removed a "PROTOTYPE" from a comment.

src/Compilers/CSharp/Portable/CodeGen/EmitStatement.cs

@@ -1478,8 +1478,8 @@ private string GetLocalDebugName(ILocalSymbolInternal local, out LocalDebugId lo
             // only user-defined locals should be named during lowering:
             Debug.Assert((local.Name == null) == (localKind != SynthesizedLocalKind.UserDefined));
 
-            // PROTOTYPE: Generating debug names for instrumentation payload should be allowed pending https://github.com/dotnet/roslyn/issues/11024.
-            // Skip naming locals generated by instrumentation as they might not have a local syntax offset.
+            // Generating debug names for instrumentation payloads should be allowed, as described in https://github.com/dotnet/roslyn/issues/11024.
+            // For now, skip naming locals generated by instrumentation as they might not have a local syntax offset.
             // Locals generated by instrumentation might exist in methods which do not contain a body (auto property initializers).
             if (!localKind.IsLongLived() || localKind == SynthesizedLocalKind.InstrumentationPayload)
             {