Fix redundance:

it's not necessary rebuild the completion_index from the search.index,
we can consider that if search.index exists, this information will also
be at completion.json
6 jobs for autocomplete in 0 seconds (queued for 768 minutes and 52 seconds)
Status Name Job ID Coverage
  Test
failed debian_stretch_x86_64_deb #27739
debian stretch x86_64

failed osx_10.11_x86_64_dmg #27741
osx v10.11 dmg

failed osx_10.8_x86_64_dmg #27742
osx v10.8 dmg

failed raspbian_stretch_armv7l_deb #27744
raspbian arm stretch

failed ubuntu_16.04_x86_64_deb #27740
ubuntu v16.04 x86_64

failed windows_i386_innosetup #27743
windows i386

 
Name Stage Failure
failed
windows_i386_innosetup Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
raspbian_stretch_armv7l_deb Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
osx_10.11_x86_64_dmg Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
osx_10.8_x86_64_dmg Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
ubuntu_16.04_x86_64_deb Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log
failed
debian_stretch_x86_64_deb Test There has been a timeout failure or the job got stuck. Check your timeout limits or try again
No job log