fix(examples): simple http_server example build for Linux target

Static task creation on Linux target had issues with insufficient stack
memory allocation. Type of `StackType_t` is `unsigned long` and hence
it must be considered during stack memory allocation.

Fix ensures proper working of simple HTTP server example.

components/esp_http_server/src/port/linux/osal.h

@@ -1,55 +0,0 @@
-/*
- * SPDX-FileCopyrightText: 2023 Espressif Systems (Shanghai) CO LTD
- *
- * SPDX-License-Identifier: Apache-2.0
- */
-#pragma once
-
-#include <unistd.h>
-#include <stdint.h>
-#include <pthread.h>
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define OS_SUCCESS ESP_OK
-#define OS_FAIL    ESP_FAIL
-
-typedef TaskHandle_t othread_t;
-
-static inline int httpd_os_thread_create(othread_t *thread,
-                                 const char *name, uint16_t stacksize, int prio,
-                                 void (*thread_routine)(void *arg), void *arg,
-                                 BaseType_t core_id, uint32_t caps)
-{
-    pthread_attr_t thread_attr;
-    pthread_attr_init(&thread_attr);
-    pthread_attr_setstacksize(&thread_attr, stacksize);
-    int ret = pthread_create((pthread_t *)thread, &thread_attr, (void*)thread_routine, arg);
-    if (ret == 0) {
-        return OS_SUCCESS;
-    }
-    return OS_FAIL;
-}
-
-/* Only self delete is supported */
-static inline void httpd_os_thread_delete(void)
-{
-    int x;
-    pthread_exit((void *)&x);
-}
-
-static inline void httpd_os_thread_sleep(int msecs)
-{
-    usleep(msecs * 1000);
-}
-
-static inline othread_t httpd_os_thread_handle(void)
-{
-    return (othread_t)pthread_self();
-}
-
-#ifdef __cplusplus
-}
-#endif