[fix] delete useless code.

components/net/lwip-2.0.3/src/arch/include/arch/cc.h

@@ -92,10 +92,6 @@ void sys_arch_assert(const char* file, int line);
 #define LWIP_PLATFORM_DIAG(x)   do {rt_kprintf x;} while(0)
 #define LWIP_PLATFORM_ASSERT(x) do {rt_kprintf(x); sys_arch_assert(__FILE__, __LINE__);}while(0)
 
-//#define SYS_ARCH_DECL_PROTECT(level)
-//#define SYS_ARCH_PROTECT(level)     rt_enter_critical()
-//#define SYS_ARCH_UNPROTECT(level)   rt_exit_critical()
-
 #define SYS_ARCH_DECL_PROTECT(level)    register rt_base_t level
 #define SYS_ARCH_PROTECT(level)         do {level = rt_hw_interrupt_disable();} while(0)
 #define SYS_ARCH_UNPROTECT(level)       do {rt_hw_interrupt_enable(level);} while(0)