[bootlin/training-materials] 873c15: labs/sysdev-buildroot: xdot is not needed

[Thomas Petazzoni]

  Branch: refs/heads/master
  Home:   https://github.com/bootlin/training-materials
  Commit: 873c159287795eb1f6112c4148001bea225219d0
      https://github.com/bootlin/training-materials/commit/873c159287795eb1f6112c4148001bea225219d0
  Author: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
  Date:   2022-09-27 (Tue, 27 Sep 2022)

  Changed paths:
    M labs/sysdev-buildroot/sysdev-buildroot.tex

  Log Message:
  -----------
  labs/sysdev-buildroot: xdot is not needed

Buildroot directly generates a PDF file.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at bootlin.com>