[BUG] the syscall table is not used anymore

https://0xax.gitbooks.io/linux-insides/content/SysCall/linux-syscall-2.html
Looking at the "Initialization of the system calls table" section, it's quite misleading since the syscall table isn't used in newer kernel versions and the [arch/x86/entry/syscall_64.c](https://github.com/torvalds/linux/blob/16f73eb02d7e1765ccab3d2018e0bd98eb93d973/arch/x86/entry/syscall_64.c) file is linked which looks different now, see https://github.com/torvalds/linux/blob/master/arch/x86/entry/syscall_64.c#L19.

The issue points to a specific section in the book about syscall table initialization. Review the linked section in the GitBook and compare it with the current arch/x86/entry/syscall_64.c file in the Linux kernel repository. Determine what text is outdated and needs updating to reflect that the syscall table is no longer used. The fix involves editing the book's content, likely in a Markdown or similar source file.

Written by the indexing model from the issue text.