Revert << vars/build.vars:python2_host:${PKG_BUILD_DIR}: -- build within ../../src/python2_host-${PKG_PYTHON2_HOST_VERSION}.>>
This reverts commit 04ace40b47361388eca7e2080ee5f5ce0276069c.
Signed-off-by: Lucio Andrés Illanes Albornoz <lucio@lucioillanes.de>