remove the unnecessary "#pragma pack(pop)"

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@2409 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/finsh/finsh.h

@@ -124,9 +124,7 @@ struct finsh_syscall
 #endif
 	syscall_func func;		/* the function address of system call */
 };
-#if defined(_MSC_VER)
-#pragma pack(pop)
-#endif
+
 /* system call item */
 struct finsh_syscall_item
 {