Removed a no longer needed function disambiguation.
Removed a no longer needed function disambiguation.

It appears that with the compiler versions we now support, this
disambiguation is no longer necessary.

Review: https://reviews.apache.org/r/50853/

neilconway/mesos,chhsia0/mesos,abudnik/mesos,asamerh4/mesos,dforsyth/mesos,asamerh4/mesos,asamerh4/mesos,zmalik/mesos,Aman-Jain-14/customizedMesos,kaysoky/mesos,reneploetz/mesos,gsantovena/mesos,abudnik/mesos,yuquanshan/customizedMesos,Gilbert88/mesos,andschwa/mesos,verizonlabs/mesos,jpeach/mesos,verizonlabs/mesos,craimbert/mesos,chhsia0/mesos,kaysoky/mesos,abudnik/mesos,gsantovena/mesos,kaysoky/mesos,craimbert/mesos,chhsia0/mesos,neilconway/mesos,gsantovena/mesos,Aman-Jain-14/customizedMesos,craimbert/mesos,kaysoky/mesos,zmalik/mesos,verizonlabs/mesos,andschwa/mesos,kaysoky/mesos,gsantovena/mesos,jpeach/mesos,jpeach/mesos,andschwa/mesos,verizonlabs/mesos,reneploetz/mesos,verizonlabs/mesos,abudnik/mesos,chhsia0/mesos,asamerh4/mesos,yuquanshan/customizedMesos,zmalik/mesos,yuquanshan/customizedMesos,jpeach/mesos,asamerh4/mesos,neilconway/mesos,reneploetz/mesos,andschwa/mesos,yuquanshan/customizedMesos,jpeach/mesos,Gilbert88/mesos,zmalik/mesos,Gilbert88/mesos,neilconway/mesos,Aman-Jain-14/customizedMesos,chhsia0/mesos,reneploetz/mesos,Gilbert88/mesos,asamerh4/mesos,craimbert/mesos,yuquanshan/customizedMesos,zmalik/mesos,jpeach/mesos,craimbert/mesos,Gilbert88/mesos,reneploetz/mesos,dforsyth/mesos,yuquanshan/customizedMesos,neilconway/mesos,chhsia0/mesos,dforsyth/mesos,gsantovena/mesos,kaysoky/mesos,neilconway/mesos,Aman-Jain-14/customizedMesos,andschwa/mesos,reneploetz/mesos,dforsyth/mesos,Aman-Jain-14/customizedMesos,abudnik/mesos,Gilbert88/mesos,andschwa/mesos,gsantovena/mesos,chhsia0/mesos,kaysoky/mesos,verizonlabs/mesos,verizonlabs/mesos,yuquanshan/customizedMesos,Aman-Jain-14/customizedMesos,craimbert/mesos,asamerh4/mesos,reneploetz/mesos,abudnik/mesos,zmalik/mesos,andschwa/mesos,abudnik/mesos,dforsyth/mesos,dforsyth/mesos,craimbert/mesos,Gilbert88/mesos,dforsyth/mesos,Aman-Jain-14/customizedMesos,zmalik/mesos,gsantovena/mesos,jpeach/mesos,neilconway/mesos