support/dependencies: remove confusing comment about host system python

Since commit 9c0c7846cdb6 (support/dependencies: don't check for python
on the host), we no longer check for a host python interpreter installed
on the system.

Drop the comment in support/dependencies/check-host-python3.sh, as it is
now confusing.

Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Signed-off-by: Julien Olivain <ju.o@free.fr>
(cherry picked from commit 3722998a3d0b771154b5069798f55ff9ea2c81bd)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

support/dependencies/check-host-python3.sh

@@ -7,8 +7,6 @@ version_min="$(echo ${1} | awk '{ split($1, v, "."); print v[1] v[2] }')"
 
 shift
 
-# The host python interpreter is already checked by dependencies.sh but
-# it only check if the version is at least 2.7.
 # We want to check the version number of the python3 interpreter even
 # if Buildroot is able to use any version but some packages may require
 # a more recent version.