remove some unused deps

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/search/package.json

@@ -56,7 +56,6 @@
     "@backstage/plugin-catalog-react": "workspace:^",
     "@backstage/plugin-search-common": "workspace:^",
     "@backstage/plugin-search-react": "workspace:^",
-    "@backstage/theme": "workspace:^",
     "@backstage/types": "workspace:^",
     "@backstage/version-bridge": "workspace:^",
     "@material-ui/core": "^4.12.2",
@@ -80,8 +79,7 @@
     "@testing-library/jest-dom": "^6.0.0",
     "@testing-library/react": "^14.0.0",
     "@testing-library/user-event": "^14.0.0",
-    "history": "^5.0.0",
-    "msw": "^1.0.0"
+    "history": "^5.0.0"
   },
   "files": [
     "dist",