Remove preferred kernel version from ast2400 machine

This was left over from when the ast2400 systems used a different kernel
than the ast2500 systems. Now that they are both on 4.6, we can drop
this PREFERRED_VERSION.

Change-Id: I683fdfdc804789fe1353ef09154c92714009cd07
Signed-off-by: Joel Stanley <joel@jms.id.au>
1 file changed
tree: dd7ffe61f39af35d1ef897f7f24b22509de864e6
  1. conf/
  2. meta-ast2400/
  3. meta-ast2500/
  4. COPYING.apache-2.0
  5. COPYING.MIT
  6. LICENSE