diff --git a/samples/client/petstore/objc/core-data/SwaggerClient/Model/SWGApiResponse.m b/samples/client/petstore/objc/core-data/SwaggerClient/Model/SWGApiResponse.m
deleted file mode 100644
index cfa8aa1eb20..00000000000
--- a/samples/client/petstore/objc/core-data/SwaggerClient/Model/SWGApiResponse.m
+++ /dev/null
@@ -1,34 +0,0 @@
-#import "SWGApiResponse.h"
-
-@implementation SWGApiResponse
-
-- (instancetype)init {
-  self = [super init];
-  if (self) {
-    // initialize property's default value, if any
-    
-  }
-  return self;
-}
-
-
-/**
- * Maps json key to property name.
- * This method is used by `JSONModel`.
- */
-+ (JSONKeyMapper *)keyMapper {
-  return [[JSONKeyMapper alloc] initWithModelToJSONDictionary:@{ @"code": @"code", @"type": @"type", @"message": @"message" }];
-}
-
-/**
- * Indicates whether the property with the given name is optional.
- * If `propertyName` is optional, then return `YES`, otherwise return `NO`.
- * This method is used by `JSONModel`.
- */
-+ (BOOL)propertyIsOptional:(NSString *)propertyName {
-
-  NSArray *optionalProperties = @[@"code", @"type", @"message"];
-  return [optionalProperties containsObject:propertyName];
-}
-
-@end
diff --git a/samples/client/petstore/objc/default/SwaggerClient/Model/SWGApiResponse.m b/samples/client/petstore/objc/default/SwaggerClient/Model/SWGApiResponse.m
deleted file mode 100644
index cfa8aa1eb20..00000000000
--- a/samples/client/petstore/objc/default/SwaggerClient/Model/SWGApiResponse.m
+++ /dev/null
@@ -1,34 +0,0 @@
-#import "SWGApiResponse.h"
-
-@implementation SWGApiResponse
-
-- (instancetype)init {
-  self = [super init];
-  if (self) {
-    // initialize property's default value, if any
-    
-  }
-  return self;
-}
-
-
-/**
- * Maps json key to property name.
- * This method is used by `JSONModel`.
- */
-+ (JSONKeyMapper *)keyMapper {
-  return [[JSONKeyMapper alloc] initWithModelToJSONDictionary:@{ @"code": @"code", @"type": @"type", @"message": @"message" }];
-}
-
-/**
- * Indicates whether the property with the given name is optional.
- * If `propertyName` is optional, then return `YES`, otherwise return `NO`.
- * This method is used by `JSONModel`.
- */
-+ (BOOL)propertyIsOptional:(NSString *)propertyName {
-
-  NSArray *optionalProperties = @[@"code", @"type", @"message"];
-  return [optionalProperties containsObject:propertyName];
-}
-
-@end