Minor issue causing warnings in MT 5.5.0 with texture alpha clipping

[Baigle]

Minor issue causing warnings in MT 5.5.0 with texture alpha clipping

[Calinou]

• default_glass.png, default_obsidian_glass.png and moreblocks_clean_glass.png are meant to be transparent.
• moreblocks_cactus_checker.png is meant to be opaque.

For opaque textures, which value should be used for use_texture_alpha? Should it be set to false explicitly or should the line be removed entirely?

[fluxionary]

The approach I've taken in #191 is to copy the use_texture_alpha from the parent node by default, and allow individual registration to override that if desired. This puts the resolution of these warnings into other modmakers' hands. IMO There isn't more of a solution needed in the context of stairsplus itself.

oh this is about moreblocks itself, not stairsplus... sure i'll fix this