update travis

Author: baggepinnen

.travis.yml

@@ -2,7 +2,6 @@
 language: julia
 os:
   - linux
-  - osx
 julia:
   - 1.0
   - nightly
@@ -14,7 +13,5 @@ notifications:
   email: false
 
 after_success:
-  # push coverage results to Coveralls
-  - julia -e 'import Pkg; Pkg.add("Coverage"); using Coverage; Coveralls.submit(Coveralls.process_folder())'
   # push coverage results to Codecov
   - julia -e 'import Pkg; Pkg.add("Coverage"); using Coverage; Codecov.submit(Codecov.process_folder())'