Unused pixels in bed textures

Relates to: MC-176095 MC-199660 MC-208679 MC-250985 MC-271303

May also relate to: MC-159560

The bug

The texture files for beds all contain an unused row of black pixels at the very bottom, and an unused column of black pixels at the very right. This affects all colours of bed except red (although in Programmer Art, all 16 colours are affected).

In addition, every bed has 72 pixels which are used by the model, but can never be seen without clipping inside of the bed, corresponding to where the feet meet the bottom of the bed. While removing these does change the way beds look on the inside in Spectator mode and such, it is not a concern at all given the resolution of MC-167243, and they look completely the same from the outside anyway.

How to fix

Remove all these pixels from the texture file. I have attached fixed versions of all texture files to this ticket - it should be as simple as replacing the default textures with these sixteen, and Programmer Art's with the other sixteen (included as a zip as to not exceed the weird 30-file limit).