Remove Rietveld CQ config.
Remove Rietveld CQ config.

Rietveld CQ has already been disabled and is no longer supoorted.

No-Try: True
Bug: chromium:770592
Change-Id: Idc3324bb9058eef1c5895f61e082c68bd98e5715
Reviewed-on: https://chromium-review.googlesource.com/714533
Reviewed-by: Dirk Pranke <6693ee08b084bb2ffa767f664c99b689395e0e4b@chromium.org>
Commit-Queue: Dirk Pranke <6693ee08b084bb2ffa767f664c99b689395e0e4b@chromium.org>

bnoordhuis/gyp,bnoordhuis/gyp,turbulenz/gyp,msc-/gyp,Phuehvk/gyp,Phuehvk/gyp,adblockplus/gyp,chromium/gyp,bnoordhuis/gyp,chromium/gyp,adblockplus/gyp,Phuehvk/gyp,chromium/gyp,bnoordhuis/gyp,adblockplus/gyp,msc-/gyp,Phuehvk/gyp,turbulenz/gyp,adblockplus/gyp,turbulenz/gyp,turbulenz/gyp,turbulenz/gyp,msc-/gyp,chromium/gyp,msc-/gyp,adblockplus/gyp,bnoordhuis/gyp,chromium/gyp,Phuehvk/gyp,msc-/gyp