Remove stale Vulkan compile gates and legacy OpenGL cvar plumbing#266

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cursor/feature-flag-cleanup-6b95

Commits on Jun 16, 2026

Remove stale compile-time feature flags and legacy OpenGL cvar plumbing

cursoragent
and
timfox
committed
Remove dead DetectNeeds() and shader.needsNormal/needsST2 fields

cursoragent
and
timfox
committed
Remove dead non-PBR shader init path in vk_shader_modules

cursoragent
and
timfox
committed