De-duplicate contributing docs, point to website
Instead of maintaining duplicate contributing docs here, link to the
main Submariner contributing docs on the website.
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-**Table of Contents** *generated with [DocToc](https://github.com/thlorenz/doctoc)*
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-- [Contributing to Submariner](#contributing-to-submariner)
- - [Overview](#overview)
- - [How to contribute](#how-to-contribute)
- - [Reaching out](#reaching-out)
- - [Slack](#slack)
- - [Google group](#google-group)
- - [Weekly Meeting](#weekly-meeting)
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-# Contributing to Submariner
-
-:+1::tada: First off, thanks for taking the time to contribute to Submariner! :tada::+1:
-
-## Overview
-
-Submariner is a tool built to connect overlay networks of different Kubernetes clusters. It aims to be CNI agnostic.
-
-## How to contribute
-
-To contribute to Submariner:
-
-1. Fork this repository
-2. Make your changes in the fork
-3. Test your changes by running `make e2e` which deploys [Submariner in a Kind 3 cluster
- setup](https://submariner.io/contributing/building_testing/#end-to-end-tests) and runs E2E tests
-4. Submit a pull request (PR) to Submariner master branch
-5. (Optionally) Run `make cleanup` to tear down the test clusters once you're finished.
-
-Refer to [this link](https://help.github.com/en/articles/creating-a-pull-request-from-a-fork) on how to submit a PR.
-
-A good PR commit message clearly explains the purpose of a PR and the logic implemented.
-
-## Reaching out
-
-You can reach out to Submariner folks on Slack and Google Groups.
-
-### Slack
-
-Join the #submariner Slack channel on [the Kubernetes workspace](https://kubernetes.slack.com/).
-
-### Google group
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-Join [Submariner's Google group](https://groups.google.com/forum/#!forum/submariner-dev).
-
-### Weekly Meeting
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-Join [Submariner's weekly meeting](https://bluejeans.com/3472508766) from 11:00-11:30AM ET ([agendas and notes](https://docs.google.com/document/d/1qnZ2LpF_rXGfnYYPNTldQ4WbeEUxwnuQD-xTC6GbZdg)).
+Please see the [Contributing docs on Submariner's website](https://submariner.io/contributing/).
