Excellent question! I opened up the Advanced Race Guide to check, and it's inconclusive.

Here's the argument that it replaces.
Quote Originally Posted by Pg. 214, Race Examples
This chapter features numerous examples of races
designed with the race builder. Sidebars early in the
chapter offer detailed examples of races found in the
Pathfinder RPG Bestiary, Bestiary 2, and Bestiary 3 that would
normally have racial Hit Dice, skills, and other abilities. PC
members of such races, however, calculate these benefits
based solely on their class. Note that these races are only
an approximation of their monstrous counterparts and
may not match exactly. Later in the chapter, sidebars detail
entirely new races created using the race builder rules.
Lastly, the final section of the chapter breaks down the
points and abilities of core races and many of the featured
and uncommon races.
Here's the argument that it's optional.

Quote Originally Posted by Introduction
Lastly, a few examples of new and monstrous races
are presented throughout [Chapter 4: Race Builder], allowing you to
insert even more racial diversity into your Pathfinder
game without having to build a new race from whole
cloth. Incorporate them as presented, or pick them apart
and rebuild them yourself. You have the tools now—the
possibilities are endless.