message: packages/core-api: prune imports
diff: "@backstage/theme": "^0.1.1-alpha.6",
  "@material-ui/core": "^4.9.1",
  "@material-ui/icons": "^4.9.1",
  - "@material-ui/lab": "4.0.0-alpha.45",
  - "@types/classnames": "^2.2.9",
  - "@types/google-protobuf": "^3.7.2",
  "@types/jest": "^25.2.2",
  "@types/node": "^12.0.0",
  - "@types/react-helmet": "^5.0.15",
  - "@types/react-sparklines": "^1.7.0",
  "@types/zen-observable": "^0.8.0",
  - "classnames": "^2.2.6",
  - "clsx": "^1.1.0",
  - "lodash": "^4.17.15",
  - "material-table": "^1.58.0",
  "prop-types": "^15.7.2",
  - "rc-progress": "^3.0.0",
  "react": "^16.12.0",
  - "react-addons-text-content": "0.0.4",
  - "react-dom": "^16.12.0",
  - "react-helmet": "5.2.1",
  - "react-router": "^5.2.0",
  "react-router-dom": "^5.2.0",
  - "react-sparklines": "^1.7.0",
  - "react-syntax-highlighter": "^12.2.1",
  "react-use": "^14.2.0",
  "zen-observable": "^0.8.15"
  },
  "devDependencies": {
  "@backstage/cli": "^0.1.1-alpha.6",
  - "@backstage/test-utils": "^0.1.1-alpha.6",
  "@backstage/test-utils-core": "^0.1.1-alpha.6",
  "@testing-library/jest-dom": "^5.7.0",
  "@testing-library/react": "^9.3.2",
  