Relates to MC-832

The bug

Dragon eggs emit a light level of 1.

Aside from this making them very impractical as a light source, it also has the potential to cause visual problems such as MC-50734, which can result in ugly and sharp lighting transitions to other blocks due to light-emitting blocks ignoring ambient occlusion, especially if the dragon egg is given a custom model. (In addition, it makes the line in the dragon egg model that disables ambient occlusion completely redundant.) Removing the light emitted by dragon eggs, which would make effectively zero changes to gameplay, would very likely alleviate this bug.

How to reproduce

1. Place a dragon egg in a completely dark area
2. Stare at the block below it

Expected results

The supporting block would appear completely unchanged.

Actual results

There is an incredibly subtle orangeness which arises due to the ender dragon egg being on top of it, which can be attributed to block light.