Remove old book chapters

b81aadf0 · Austin Clements · 09b19091 · 09b19091 · 09b19091 · 09b19091
--- a/web/boot.pdf
+++ b/web/boot.pdf
--- a/web/disk.pdf
+++ b/web/disk.pdf
--- a/web/exec.pdf
+++ b/web/exec.pdf
--- a/web/fscall.pdf
+++ b/web/fscall.pdf
--- a/web/fsdata.pdf
+++ b/web/fsdata.pdf
--- a/web/lock.pdf
+++ b/web/lock.pdf
--- a/web/mem.pdf
+++ b/web/mem.pdf
--- a/web/sched.pdf
+++ b/web/sched.pdf
--- a/web/trap.pdf
+++ b/web/trap.pdf
--- a/web/unix.pdf
+++ b/web/unix.pdf