wsi/x11: Remove B8G8R8_UNORM
wsi/x11: Remove B8G8R8_UNORM

We don't actually support that format yet because ISL doesn't have an enum
for it.  We need to beef up the formats table to allow for tiled-only
formats.

metora/MesaGLSLCompiler,metora/MesaGLSLCompiler,metora/MesaGLSLCompiler