Update build script to fix build on Mac

jgoldfar · web-flow · commit 578fce3cb511 · 2017-05-05T14:34:48.000-04:00
diff --git a/conf/travis-install-mpi.sh b/conf/travis-install-mpi.sh
@@ -12,7 +12,6 @@ case "$os" in
     Darwin)
         brew update
         brew upgrade cmake
-	    brew upgrade gcc
         case "$MPI_IMPL" in
             mpich|mpich3)
                 brew install mpich
