[ARROW-4334] [CI] Setup conda-forge channel globally in travis builds

• Type: Task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.13.0
• Component/s: Continuous Integration
• External issue URL: https://github.com/apache/arrow/issues/20903
• Assignee: Krisztian Szucs
• Reporter: Krisztian Szucs
• Created: 23/Jan/19 09:13
• Updated: 11/Jan/23 07:33
• Resolved: 01/Mar/19 17:38

Description

It looks like conda-forge is already set as top-priority channel: https://github.com/apache/arrow/blob/master/ci/travis_install_conda.sh#L71

We can most certeinly remove all occurrences of -c conda-forge