0e0a9ec5ab26 drm/doc/rfc: Remove i915_scheduler item.
d1c90392f13a drm/doc/rfc: Remove i915_small_bar rfc.
9dcbec0d69e9 drm/doc/rfc: Remove i915_vm_bind.
63af91ccf501 drm/doc/rfc: Remove i915_gem_lmem.rst