chore: drop IoT 1-click service clients (#1492)

Author: ianbotsf

.changes/4bd537a9-f898-4c35-9758-bd3f0b2a5aae.json

@@ -0,0 +1,5 @@
+{
+    "id": "4bd537a9-f898-4c35-9758-bd3f0b2a5aae",
+    "type": "misc",
+    "description": "Remove IoT 1-click services from SDK"
+}

codegen/aws-sdk-codegen/src/test/kotlin/aws/sdk/kotlin/codegen/EndpointUrlConfigNamesTest.kt

@@ -758,16 +758,6 @@ private const val TEST_SUITE_JSON = """
     "services_section_name": "iot_jobs_data_plane",
     "service_envvar_name": "AWS_ENDPOINT_URL_IOT_JOBS_DATA_PLANE"
   },
-  {
-    "service_id": "IoT 1Click Devices Service",
-    "services_section_name": "iot_1click_devices_service",
-    "service_envvar_name": "AWS_ENDPOINT_URL_IOT_1CLICK_DEVICES_SERVICE"
-  },
-  {
-    "service_id": "IoT 1Click Projects",
-    "services_section_name": "iot_1click_projects",
-    "service_envvar_name": "AWS_ENDPOINT_URL_IOT_1CLICK_PROJECTS"
-  },
   {
     "service_id": "IoTAnalytics",
     "services_section_name": "iotanalytics",