blinky: Remove not needed connectivity macros

blinky application doesn't connect to AWS so there is no
need to have MQTT and OTA tasks configurations as part of its
application configuration.

Signed-off-by: Ahmed Ismail <Ahmed.Ismail@arm.com>

applications/blinky/configs/app_config/app_config.h

@@ -1,39 +1,9 @@
-/* Copyright 2023 Arm Limited and/or its affiliates
+/* Copyright 2023-2024 Arm Limited and/or its affiliates
  * <open-source-office@arm.com>
  * SPDX-License-Identifier: MIT
  */
 
-/**
- * @brief Subscribe Publish demo tasks configuration.
- * Subscribe publish demo task shows the basic functionality of connecting to an MQTT broker, subscribing
- * to a topic, publishing messages to a topic and reporting the incoming messages on subscribed topic.
- * Number of subscribe publish demo tasks to be spawned is configurable.
- */
-#define appCONFIG_MQTT_NUM_PUBSUB_TASKS             ( 1 )
-#define appCONFIG_MQTT_PUBSUB_TASK_STACK_SIZE       ( 2048 )
-#define appCONFIG_MQTT_PUBSUB_TASK_PRIORITY         ( tskIDLE_PRIORITY + 1 )
-
-/**
- * @brief Stack size and priority for MQTT agent task.
- * Stack size is capped to an adequate value based on requirements from MbedTLS stack
- * for establishing a TLS connection. Task priority of MQTT agent is set to a priority
- * higher than other MQTT application tasks, so that the agent can drain the queue
- * as work is being produced.
- */
-#define appCONFIG_MQTT_AGENT_TASK_STACK_SIZE        ( 4096 )
-#define appCONFIG_MQTT_AGENT_TASK_PRIORITY          ( tskIDLE_PRIORITY + 2 )
-
-/**
- * @brief Stack size and priority for OTA MQTT agent task.
- * Stack size is capped to an adequate value based on requirements from MbedTLS stack
- * for establishing a TLS connection. Task priority of OTA MQTT agent is set to a priority
- * higher than other MQTT application tasks, so that the agent can drain the queue
- * as work is being produced.
- */
-#define appCONFIG_OTA_MQTT_AGENT_TASK_STACK_SIZE    ( 4096 )
-#define appCONFIG_OTA_MQTT_AGENT_TASK_PRIORITY      ( tskIDLE_PRIORITY + 1 )
-
 /** @brief Set logging task as high priority task */
-#define appCONFIG_LOGGING_TASK_PRIORITY             ( configMAX_PRIORITIES - 1 )
-#define appCONFIG_LOGGING_TASK_STACK_SIZE           ( 2048 )
-#define appCONFIG_LOGGING_MESSAGE_QUEUE_LENGTH      ( 32 )
+#define appCONFIG_LOGGING_TASK_PRIORITY           ( configMAX_PRIORITIES - 1 )
+#define appCONFIG_LOGGING_TASK_STACK_SIZE         ( 2048 )
+#define appCONFIG_LOGGING_MESSAGE_QUEUE_LENGTH    ( 32 )