CI: Restore coverage config, remove codecov config

Author: effigies

.travis.yml

@@ -146,6 +146,7 @@ script:
           # Change into an innocuous directory and find tests from installation
           mkdir for_testing
           cd for_testing
+          cp ../.coveragerc .
           nosetests --with-doctest --with-coverage --cover-package nibabel nibabel
       else
           false