Well if you have Avast installed and something else tries to remove elements of Avast the Avast self-defence module will try to prevent that.
The greater issue is why you would even want to remove them.
The screenshot though massive doesn't actually show the full path or file name, or why ESET detects it. Guessing the remainder of the Threat name in the image, is I suspect 'Potentially Unwanted Program.' Having installed Avast this is hardly unwanted, in this case I would say you should have elected to do nothing.