Remove uses of HVAC.Meter

Created by: marcusfuchs

The models AixLib.HVAC.Meter.EEnergyMeter and AixLib.HVAC.Meter.TEnergyMeter are duplicates of AixLib.Utilities.Sensors.EEnergyMeter and AixLib.Utilities.Sensors.TEnergyMeter

The following models should change their components to be used from Sensors rather than HVAC: AixLib.Building.HighOrder.Examples.Validation.ASHRAE140.Case600 AixLib.Building.HighOrder.Examples.Validation.ASHRAE140.Case900 AixLib.Building.LowOrder.Examples.ThermalZoneExample AixLib.Building.LowOrder.Examples.Validation.ASHRAE140.Case950 AixLib.Fluid.HeatExchangers.Utilities.FuelCounter

This should be solved before #180 (closed)