Removed stale FetcherProcess::setSpace declaration.
Removed stale FetcherProcess::setSpace declaration.

Removed the stale declaration of FetcherProcess::setSpace(). The
implementation was previously removed in 6db493c07.

Review: https://reviews.apache.org/r/60936/

kaysoky/mesos,dforsyth/mesos,dforsyth/mesos,verizonlabs/mesos,chhsia0/mesos,jpeach/mesos,asamerh4/mesos,chhsia0/mesos,chhsia0/mesos,asamerh4/mesos,jpeach/mesos,Gilbert88/mesos,chhsia0/mesos,kaysoky/mesos,dforsyth/mesos,gsantovena/mesos,gsantovena/mesos,jpeach/mesos,andschwa/mesos,gsantovena/mesos,reneploetz/mesos,abudnik/mesos,verizonlabs/mesos,zmalik/mesos,abudnik/mesos,verizonlabs/mesos,zmalik/mesos,gsantovena/mesos,reneploetz/mesos,zmalik/mesos,asamerh4/mesos,zmalik/mesos,reneploetz/mesos,reneploetz/mesos,zmalik/mesos,zmalik/mesos,abudnik/mesos,abudnik/mesos,chhsia0/mesos,chhsia0/mesos,jpeach/mesos,Gilbert88/mesos,andschwa/mesos,andschwa/mesos,dforsyth/mesos,Gilbert88/mesos,andschwa/mesos,kaysoky/mesos,Gilbert88/mesos,reneploetz/mesos,abudnik/mesos,andschwa/mesos,jpeach/mesos,asamerh4/mesos,kaysoky/mesos,abudnik/mesos,jpeach/mesos,verizonlabs/mesos,abudnik/mesos,chhsia0/mesos,andschwa/mesos,Gilbert88/mesos,gsantovena/mesos,kaysoky/mesos,Gilbert88/mesos,reneploetz/mesos,gsantovena/mesos,gsantovena/mesos,reneploetz/mesos,asamerh4/mesos,verizonlabs/mesos,kaysoky/mesos,zmalik/mesos,verizonlabs/mesos,jpeach/mesos,asamerh4/mesos,dforsyth/mesos,verizonlabs/mesos,dforsyth/mesos,kaysoky/mesos,dforsyth/mesos,asamerh4/mesos,andschwa/mesos,Gilbert88/mesos