Delete pkg/dtd_impl/dtd_common_services.md

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• Thanks for your contribution! Please replace this text with a description of what this PR is changing or adding and why, list any relevant issues, and review the contribution guidelines below.

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• I’ve reviewed the contributor guide and applied the relevant portions to this PR.

Contribution guidelines:

• See our contributor guide for general expectations for PRs.
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Thanks for your pull request! It looks like this may be your first contribution to a Google open source project. Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

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Ykimyoung1:patch-1

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I don't need it

[mraleph]

Just to warn you: if you continue sending nonsense PRs you will get banned.

[ghost]

Yeah