clean unnecessary lock initialization in kernel

Ubiquitous/XiZi_AIoT/softkernel/syscall/sys_exec.c

@@ -200,7 +200,6 @@ int sys_exec(char* img_start, char* name, char** argv)
     struct TaskMicroDescriptor* current_task = cur_cpu()->task;
     int ret = task_exec(current_task, img_start, name, argv);
     if (ret >= 0) {
-        spinlock_init(&current_task->lock, current_task->name);
         p_mmu_driver->LoadPgdir((uintptr_t)V2P(current_task->pgdir.pd_addr));
         return ret;
     }

Ubiquitous/XiZi_AIoT/softkernel/syscall/sys_register_irq.c

@@ -74,6 +74,7 @@ int user_irq_handler(int irq, void* tf, void* arg)
 }
 
 extern int create_session_inner(struct TaskMicroDescriptor* client, struct TaskMicroDescriptor* server, int capacity, struct Session* user_session);
+/// @warning no tested.
 int sys_register_irq(int irq_num, int irq_opcode)
 {
     static struct TraceTag intr_ac_tag;