Remove datetime from feed test
Remove datetime from feed test

Ref https://travis-ci.org/MoOx/statinamic/jobs/109283251#L651

phenomic/phenomic,phenomic/phenomic,MoOx/phenomic,phenomic/phenomic,MoOx/phenomic,MoOx/statinamic,pelhage/phenomic,MoOx/phenomic