gstwebrtc-api: drop guacamole

fixes: #417 (closed)

Seeking assistance from a knowledgeable individual proficient in Node.js, Mocha, and Webpack. To execute tests using the "npm run test" command, it's necessary to include the "type": "module" configuration in the package.json file. However, this adjustment disrupts the functioning of Webpack. Various approaches have been attempted to resolve this issue, all without success. I kindly request recommendations on how to ensure the seamless operation of both Mocha and Webpack within this project.