Remove warning: key :vcs_type is duplicated

Author: vitalie

lib/travis/yml/configs/travis/repo.rb

@@ -39,7 +39,6 @@ def map(attrs)
                 github_id: attrs['github_id'],
                 slug: attrs['slug'],
                 private: attrs['private'],
-                vcs_type: attrs['vcs_type'],
                 permissions: attrs['permissions'],
                 default_branch: attrs.dig('default_branch', 'name'),
                 allow_config_imports: allow_config_imports?(attrs),