travis: Always run multiprocess build

.travis.yml

@@ -127,7 +127,6 @@ jobs:
 
     - stage: test
       name: 'x86_64 Linux [GOAL: install]  [bionic]  [multiprocess]'
-      if: type != pull_request OR commit_message =~ /depends:|multiprocess:/ # Skip on non-depends, non-multiprocess PRs
       env: >-
         FILE_ENV="./ci/test/00_setup_env_native_multiprocess.sh"