Removed unused shader "2" files
Removed unused shader "2" files that were part of a redesign effort, which is now complete on the development branch. These files are not needed for the upcoming release and could cause confusion for other developers.
ATOM-15837 Remove Unused Shader System Related *2 Classes From Stabilization Branch.
Testing: ASV full test suite on dx12 and vulkan. Only saw known issues.
See also https://github.com/aws-lumberyard/o3de-atom-sampleviewer/pull/142
Merge pull request #1585 from aws-lumberyard-dev/santorac/stabilization/2106/RemoveShader2-ATOM-15837
Chris Santora
7c2f5890b6
