[FE training-materials-updates] Remove tftpd-hpa erratum

[Michael Opdenacker]

Repository : git://git.free-electrons.com/training-materials.git
On branch  : master
Link       : http://git.free-electrons.com/training-materials/commit/?id=4f19425c7413f35102d7f0a188726734ed5821eb

>---------------------------------------------------------------

commit 4f19425c7413f35102d7f0a188726734ed5821eb
Author: Michael Opdenacker <michael.opdenacker at free-electrons.com>
Date:   Tue Jun 7 06:47:50 2016 +0200

    Remove tftpd-hpa erratum
    
    - No longer needed in Ubuntu 16.04
    
    Signed-off-by: Michael Opdenacker <michael.opdenacker at free-electrons.com>


>---------------------------------------------------------------

4f19425c7413f35102d7f0a188726734ed5821eb
 errata/tftpd-hpa.tex                           | 27 --------------------------
 labs/kernel-board-setup/kernel-board-setup.tex |  2 --
 2 files changed, 29 deletions(-)

diff --git a/errata/tftpd-hpa.tex b/errata/tftpd-hpa.tex
deleted file mode 100644
index 2d7603b..0000000
--- a/errata/tftpd-hpa.tex
+++ /dev/null
@@ -1,27 +0,0 @@
-\fbox{
-\begin{minipage}{\textwidth}
-{\bf Caution: known issue in Ubuntu 14.04 and later (fixed
-in Ubuntu 16.04)}: if downloading through tftp doesn't work,
-you may have to stop the \code{tftpd-hpa} server and start it
-again every time you boot your workstation:
-
-\code{
-sudo service tftpd-hpa restart
-}
-
-The problem is Ubuntu starts this server too early, before the
-preconditions it needs are met. When you restart the service
-long after the machine has booted, this issue is no longer
-present.
-
-If it still doesn't work, another (radical!) workaround is to
-reinstall the \code{tftpd-hpa} server!
-
-\code{
-sudo apt-get install --reinstall tftpd-hpa
-}
-
-So far, we haven't had the time yet to investigate the root
-cause of the issue that is addressed by this last workaround.
-\end{minipage}
-}
diff --git a/labs/kernel-board-setup/kernel-board-setup.tex b/labs/kernel-board-setup/kernel-board-setup.tex
index 6ae42b3..26f2d66 100644
--- a/labs/kernel-board-setup/kernel-board-setup.tex
+++ b/labs/kernel-board-setup/kernel-board-setup.tex
@@ -203,8 +203,6 @@ file in \code{/var/lib/tftpboot}. Then, from U-Boot, do:
 tftp 0x81000000 textfile.txt
 \end{verbatim}
 
-\input{../errata/tftpd-hpa.tex}
-
 The \code{tftp} command should have downloaded the
 \code{textfile.txt} file from your development workstation into the
 board's memory at location \code{0x81000000} (this location is part of