Update CONTRIBUTING.md

Author: fdiblen

CONTRIBUTING.md

@@ -33,7 +33,6 @@ The sections below outline the steps in each case.
 - (**important**) announce your plan to the rest of the community *before you start working*. This announcement should be in the form of a (new) issue;
 - (**important**) wait until some kind of consensus is reached about your idea being a good idea;
 - if needed, fork the repository to your own Github profile and create your own feature branch off of the latest master commit. While working on your feature branch, make sure to stay up to date with the master branch by pulling in changes, possibly from the 'upstream' repository (follow the instructions [here](https://help.github.com/articles/configuring-a-remote-for-a-fork/) and [here](https://help.github.com/articles/syncing-a-fork/);
-- if cloned locally then perform a `development installation <README.dev.md#development-install>`_;
 - make sure the existing unit tests still work by running ``npm run test:unit:ci``;
 - make sure all the workflows (Github Action) pass;
 - add your own tests (if necessary);