[DEV] Revert "[DEV] Fix Blessing of Light Spell Description. Patch by zwisus https://github.com/CoronaCore/Issues/issues/9"

This reverts commit 1766366a1c6cc6db6af1783e3ee8d5f83426616a.

Signed-off-by: Salja <salja8840@gmail.com>
[z2454] Correctly check aura on target for HealingBonusTaken instead of self.

The paladin has to buff himself with Blessing of Light for the target to receive more healing.

Fix cmangos/issues#279