.travis.yml: Release the pin on `conda-build` as there have been improvements to it that have made this unnecessary.
.travis.yml: Release the pin on `conda-build` as there have been improvements to it that have made this unnecessary.

jakirkham/splauncher,nanshe-org/splauncher,DudLab/splauncher,DudLab/splauncher,nanshe-org/splauncher,jakirkham/splauncher