chore: remove population of __type from CodeGen

Author: trivikr

codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/JsonShapeDeserVisitor.java

@@ -98,7 +98,6 @@ protected void deserializeStructure(GenerationContext context, StructureShape sh
         // Use a TreeMap to sort the members.
         Map<String, MemberShape> members = new TreeMap<>(shape.getAllMembers());
         writer.openBlock("return {", "} as any;", () -> {
-            writer.write("__type: $S,", shape.getId().getName());
             // Set all the members to undefined to meet type constraints.
             members.forEach((memberName, memberShape) -> {
                 // Use the jsonName trait value if present, otherwise use the member name.

codegen/smithy-aws-typescript-codegen/src/main/java/software/amazon/smithy/aws/typescript/codegen/XmlShapeDeserVisitor.java

@@ -119,7 +119,6 @@ protected void deserializeStructure(GenerationContext context, StructureShape sh
         // Prepare the document contents structure.
         Map<String, MemberShape> members = shape.getAllMembers();
         writer.openBlock("let contents: any = {", "};", () -> {
-            writer.write("__type: $S,", shape.getId().getName());
             // Set all the members to undefined to meet type constraints.
             members.forEach((memberName, memberShape) -> writer.write("$L: undefined,", memberName));
         });