texture2d: do not set audio texture {,internal_}format at init time
texture2d: do not set audio texture {,internal_}format at init time

Texture {,internal}format will be set by hwupload when the first frame
is uploaded.

gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl,gopro/gopro-lib-node.gl