Revert #285

[leeturner]

This commit reverts PR #285. #285 was merged in error but couldn't be reverted automatically due to a commit that was performed on one of the new files after merge. This PR reverts back to the state prior to the merge of PR #285

References

• Add custom content patterns. #285

Submitter checklist

• The PR request is well described and justified, including the body and the references
• The PR title represents the desired changelog entry
• If the change against WireMock 2 functionality (incompatible with WireMock 3),
  it is submitted against the 2.x branch
• The repository's code style is followed (see the contributing guide)

Details: Contributor Guide