ACPT-648: Cover API with Webapi Test

Author: aa-kashk

dev/tests/api-functional/testsuite/Magento/ImportCsv/Api/ImportCsvApiTest.php

@@ -59,18 +59,6 @@ public function getRequestData(): array
                 'expectedResponse' => [
                     0 => 'Entities Processed: 3'
                 ]],
-                ['requestData' => [
-                    'source' => [
-                        'entity' => 'customer',
-                        'behavior' => 'add_update',
-                        'validationStrategy' => 'validation-stop-on-errors',
-                        'allowedErrorCount' => '10',
-                        'csvData' => __DIR__ . '/_files/customers.csv'
-                    ]
-                ],
-                'expectedResponse' => [
-                    0 => 'Entities Processed: 3'
-                ]],
                 ['requestData' => [
                     'source' => [
                         'entity' => 'advanced_pricing',