Revert "linux-generic: validation: fix dependency for tests-validation.env"
Revert "linux-generic: validation: fix dependency for tests-validation.env"

This reverts commit 000008f7f1de54a70d118f0ae56db48c47d60aff.
Missed to add Mike's review and this patch generates error:
ERROR: files left in build directory after distclean:
./platform/linux-generic/test/tests-validation.env

Reverting this commit until issue being resolved.

Signed-off-by: Maxim Uvarov <db4d16e02ae2d7493db430203537da8b2e34f290@linaro.org>

dkrot/odp,rsalveti/odp,erachmi/odp,ravineet-singh/odp,erachmi/odp,rsalveti/odp,nmorey/odp,erachmi/odp,rsalveti/odp,dkrot/odp,mike-holmes-linaro/odp,nmorey/odp,dkrot/odp,ravineet-singh/odp,erachmi/odp,nmorey/odp,ravineet-singh/odp,rsalveti/odp,rsalveti/odp,mike-holmes-linaro/odp,mike-holmes-linaro/odp,ravineet-singh/odp,dkrot/odp,mike-holmes-linaro/odp,nmorey/odp