Remove all the bookmaker generated docs.

Bug: skia:9787
Change-Id: I71ba5e0f31be28fdf8c56794918e4689ceae3cbf
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/269485
Auto-Submit: Joe Gregorio <jcgregorio@google.com>
Reviewed-by: Heather Miller <hcm@google.com>
Commit-Queue: Heather Miller <hcm@google.com>
24 files changed