CI: .travis.yml: reduce not used pkgName

getOptParseApplicativeComplettions does not need it

M  .travis.yml

.travis.yml

@@ -34,8 +34,6 @@ env:
     # - NIX_PATH="nixpkgs=https://github.com/nixos/nixpkgs/archive/$rev.tar.gz"
     # NOTE: Project/binary name
     - name='hnix'
-    # NOTE: Used in the `generateOptparseApplicativeCompletions = true`
-    - pkgName='haskellPackages.hnix'
     # NOTE: Enable all our tests in cabal
     - ALL_TESTS='yes'
     # NOTE: Turn all warn into err with {-Wall,-Werror}