Fix adapter-react dependencies

Up until version 1.6.14 of @iobroker/adapter-react one had to manually add dependencies to the package.json file. This is now obsolete.

You may update your devDependencies in package.json as follows:

explicitly set @iobroker/adapter-react to version 1.6.15
remove any indirect dependencies if you are not using them:
- @material-ui/icons
- react-icons
- @sentry/browser

Your package.json should now look similar to:

this for JavaScript
this for TypeScript

After these modifications, call npm install in your adapter root directory.