dillo: remove poisoned paths from configure

Fixes http://autobuild.buildroot.net/results/10f/10f7ba386a13753c942139b8bc13ca74d8932f3a/



Signed-off-by: Alex Suykov <alex.suykov@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>