Revert "Fbo attaching non-zero base level texture should be complete"
Revert "Fbo attaching non-zero base level texture should be complete"

This reverts commit b293a2601d29a95c0716725e460b395fff29e8e5.

Failing as of:
https://build.chromium.org/p/chromium.gpu.fyi/builders/Linux%20Release%20%28AMD%20R5%20230%29/builds/580
https://build.chromium.org/p/chromium.gpu.fyi/builders/Linux%20Release%20%28AMD%20R7%20240%29/builds/1258

zmo@ wants this reverted.

Change-Id: I457b6127e551c546ed861dd2d9b3f90b7bbab034
Reviewed-on: https://chromium-review.googlesource.com/427222
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>

MSOpenTech/angle,ecoal95/angle,ppy/angle,ecoal95/angle,MSOpenTech/angle,MSOpenTech/angle,ecoal95/angle,MSOpenTech/angle,ppy/angle,ecoal95/angle,ppy/angle,ecoal95/angle,ppy/angle