docs: removing upstream readme sections

Author: juancho0202

README.md

@@ -19,42 +19,6 @@ to use the CoMPAS Backend Service to open and save SCL Files and more.
 
 ## Contributing
 
-### Building
-
-If you want to build OpenSCD yourself in order to make some changes to your local installation or to contribute to the project, you may first want to install [Node.js](https://nodejs.org/) in order to be able to use our local development setup.
-
-Once Node.js is installed on your system, you may get started by entering the following lines in your command prompt:
-
-```
-git clone https://github.com/openscd/open-scd.git
-cd open-scd
-npm install
-npm start
-```
-
-This will start a local development server and open a browser window which will automatically be reloaded as soon as you save any changes to your local source code files.
-
-### TypeDoc
-
-This project uses [TypeDoc](https://typedoc.org/) to transform documentation comments in the source code into a rendered HTML document that can be queried and navigated through. If you want to consult the generated documentation for the TypeScript components, mixins, modules and other relevant artifacts of this project, you can [do it here](https://openscd.github.io/doc/).
-
-### Linting & Formatting
-
-If you use VSCode to develop, we recommend you install and use the [ESLint](https://marketplace.visualstudio.com/items?itemName=dbaeumer.vscode-eslint) and [Prettier](https://marketplace.visualstudio.com/items?itemName=esbenp.prettier-vscode) extensions in order to automatically lint and format your code as you edit it. There are similar plugins available for using [ESLint](https://eslint.org/) and [Prettier](https://prettier.io/) from within other IDEs and text editors.
-
-### Scripts
-
-We provide the following `npm` scripts for your convenience:
-
-- `npm start` runs `OpenSCD` for development, reloading on file changes
-- `npm test` runs the test suite with Karma
-- `npm run lint` runs the linter (fixes problems in your code)
-- `npm run format` runs the formatter (formats your code in a unified way)
-- `npm run doc` builds HTML documentation into the `doc` directory
-- `npm run build` builds a deployable version of the project into the `dist` directory
-
-### Development for CoMPAS OpenSCD
-
 See [Development](DEVELOPMENT.md) for more information about how to build and run CoMPAS OpenSCD locally.
 
 ## License