feat(user): Added post deletion functionality

[icamacho3]

Added network.delete_post() and rpc.content_delete() for post deletion functionality.

[GitCop]

There were the following issues with your Pull Request

• Commit: 011a9874d9a0ec901fc771e70be607239213592b
  • Commits must be in the following format: %{type}(%{scope}): %{description}

Guidelines are available at https://github.com/hfaran/piazza-api

---

This message was auto-generated by https://gitcop.com

[hfaran]

Thanks for your contribution! :shipit: