git grep says we do not use it anymore let's drop this unneeded dependency
git grep imports-loader
plugins/tracker/package-lock.json: "imports-loader": {
plugins/tracker/package-lock.json: "resolved": "
https://registry.npmjs.org/imports-loader/-/imports-loader-0.7.1.tgz",
plugins/tracker/package.json: "imports-loader": "^0.7.1",
src/package-lock.json: "imports-loader": {
src/package-lock.json: "resolved": "
https://registry.npmjs.org/imports-loader/-/imports-loader-0.7.1.tgz",
src/package.json: "imports-loader": "^0.7.1",