Fixed wrong duration for Dancing Rune Weapon, removed in 3.2.x, thx QiSoft.

--HG--
branch : trunk

src/game/SpellEffects.cpp

@@ -7335,7 +7335,6 @@ void Spell::SummonGuardian(uint32 i, uint32 entry, SummonPropertiesEntry const *
             amount = 1;
             break;
         case 49028: // Dancing Rune Weapon
-            duration += m_originalCaster->GetPower(POWER_RUNIC_POWER) * 10;
             if (AuraEffect *aurEff = m_originalCaster->GetAuraEffect(63330, 0)) // glyph of Dancing Rune Weapon
                 duration += aurEff->GetAmount();
             break;