Added backend tests; Fixes following CR

plugins/kafka/package.json

@@ -24,11 +24,9 @@
     "@backstage/core": "^0.4.3",
     "@backstage/theme": "^0.2.2",
     "@backstage/plugin-catalog": "^0.2.7",
-    "@backstage/plugin-kafka-backend": "^0.1.0",
     "@material-ui/core": "^4.11.0",
     "@material-ui/icons": "^4.9.1",
     "@material-ui/lab": "4.0.0-alpha.45",
-    "lodash": "^4.17.20",
     "react": "^16.13.1",
     "react-router": "6.0.0-beta.0",
     "react-dom": "^16.13.1",
@@ -42,7 +40,6 @@
     "@testing-library/react": "^10.4.1",
     "@testing-library/user-event": "^12.0.7",
     "@types/jest": "^26.0.7",
-    "@types/lodash": "^4.14.166",
     "@types/node": "^12.0.0",
     "cross-fetch": "^3.0.6",
     "msw": "^0.21.2"