[YUNIKORN-1259] Remove "How to contribute" doc (#85)

Closes: #85

Signed-off-by: Wilfred Spiegelenburg <wilfreds@apache.org>
diff --git a/README.md b/README.md
index c1dda08..d9bdeb6 100644
--- a/README.md
+++ b/README.md
@@ -83,4 +83,4 @@
 - Makefile
 
 ## How do I contribute code?
-See how to contribute code from [this guide](docs/how-to-contribute.md).
+See how to contribute code from [this guide](https://yunikorn.apache.org/community/how_to_contribute).
diff --git a/docs/how-to-contribute.md b/docs/how-to-contribute.md
deleted file mode 100644
index 5bc9a25..0000000
--- a/docs/how-to-contribute.md
+++ /dev/null
@@ -1,60 +0,0 @@
-<!--
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements.  See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership.  The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License.  You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- -->
-# How do I contribute code? 
-
-### Find
-We use JIRA issues to track bugs for this project. Find an issue that you would like to
-work on (or file one if you have discovered a new issue!). If no-one is working on it,
-assign it to yourself only if you intend to work on it shortly.
-The easiest way to get started working with the code base is to pick up a really easy
-JIRA and work on that. This will help you get familiar with the code base, build system,
-review process, etc. We flag these kind of starter bugs
-[here](https://issues.apache.org/jira/issues/?jql=project%3DYUNIKORN%20AND%20status%3DOpen%20AND%20labels%3Dnewbie).
-
-It’s a good idea to discuss your intended approach on the issue. You are much more
-likely to have your patch reviewed and committed if you’ve already got buy-in from the
-YuniKorn community before you start.
-
-If you cannot assign the JIRA to yourself ask the community to help assign it and add you
-to the contributors list in JIRA.   
-
-### Fix
-Now start coding! As you are writing your patch, please keep the following things in mind:
-
-First, please include tests with your patch. If your patch adds a feature or fixes a bug
-and does not include tests, it will generally not be accepted. If you are unsure how to
-write tests for a particular component, please ask on the issue for guidance.
-
-Second, please keep your patch narrowly targeted to the problem described by the issue.
-It’s better for everyone if we maintain discipline about the scope of each patch. In
-general, if you find a bug while working on a specific feature, file a issue for the bug,
-check if you can assign it to yourself and fix it independently of the feature. This helps
-us to differentiate between bug fixes and features and allows us to build stable
-maintenance releases.
-
-Make sure you have observed the recommendations in the coding guidelines.
-
-Finally, please write a good, clear commit message, with a short, descriptive title and
-a message that is exactly long enough to explain what the problem was, and how it was
-fixed.
-
-Please create a pull request on github with your patch.
-
-The pull request description should include the JIRA reference that you are working on.
-For example a pull request linked to [YUNIKORN-2](https://issues.apache.org/jira/browse/YUNIKORN-2) should have a description like:
-`[YUNIKORN-2] Gang scheduling interface parameters`