gateway: remove unused dependencies

Signed-off-by: Vincenzo Scamporlino <vincenzos@spotify.com>

plugins/gateway-backend/package.json

@@ -35,24 +35,17 @@
     "test": "backstage-cli package test"
   },
   "dependencies": {
-    "@backstage/backend-defaults": "workspace:^",
     "@backstage/backend-plugin-api": "workspace:^",
-    "@backstage/catalog-client": "workspace:^",
-    "@backstage/errors": "workspace:^",
-    "@backstage/plugin-catalog-node": "workspace:^",
     "@opentelemetry/api": "^1.9.0",
     "@opentelemetry/core": "^2.0.0",
     "express": "^4.17.1",
-    "express-promise-router": "^4.1.0",
-    "http-proxy-middleware": "^3.0.3",
-    "zod": "^3.22.4"
+    "http-proxy-middleware": "^3.0.3"
   },
   "devDependencies": {
     "@backstage/backend-app-api": "workspace:^",
+    "@backstage/backend-defaults": "workspace:^",
     "@backstage/backend-test-utils": "workspace:^",
     "@backstage/cli": "workspace:^",
-    "@types/express": "^4.17.6",
-    "@types/supertest": "^2.0.8",
-    "supertest": "^6.2.4"
+    "@types/express": "^4.17.6"
   }
 }

yarn.lock

@@ -6741,19 +6741,12 @@ __metadata:
     "@backstage/backend-defaults": "workspace:^"
     "@backstage/backend-plugin-api": "workspace:^"
     "@backstage/backend-test-utils": "workspace:^"
-    "@backstage/catalog-client": "workspace:^"
     "@backstage/cli": "workspace:^"
-    "@backstage/errors": "workspace:^"
-    "@backstage/plugin-catalog-node": "workspace:^"
     "@opentelemetry/api": ^1.9.0
     "@opentelemetry/core": ^2.0.0
     "@types/express": ^4.17.6
-    "@types/supertest": ^2.0.8
     express: ^4.17.1
-    express-promise-router: ^4.1.0
     http-proxy-middleware: ^3.0.3
-    supertest: ^6.2.4
-    zod: ^3.22.4
   languageName: unknown
   linkType: soft
 
@@ -30471,18 +30464,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"formidable@npm:^2.1.2":
-  version: 2.1.2
-  resolution: "formidable@npm:2.1.2"
-  dependencies:
-    dezalgo: ^1.0.4
-    hexoid: ^1.0.0
-    once: ^1.4.0
-    qs: ^6.11.0
-  checksum: 81c8e5d89f5eb873e992893468f0de22c01678ca3d315db62be0560f9de1c77d4faefc9b1f4575098eb2263b3c81ba1024833a9fc3206297ddbac88a4f69b7a8
-  languageName: node
-  linkType: hard
-
 "formidable@npm:^3.5.1":
   version: 3.5.1
   resolution: "formidable@npm:3.5.1"
@@ -45223,24 +45204,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"superagent@npm:^8.1.2":
-  version: 8.1.2
-  resolution: "superagent@npm:8.1.2"
-  dependencies:
-    component-emitter: ^1.3.0
-    cookiejar: ^2.1.4
-    debug: ^4.3.4
-    fast-safe-stringify: ^2.1.1
-    form-data: ^4.0.0
-    formidable: ^2.1.2
-    methods: ^1.1.2
-    mime: 2.6.0
-    qs: ^6.11.0
-    semver: ^7.3.8
-  checksum: f3601c5ccae34d5ba684a03703394b5d25931f4ae2e1e31a1de809f88a9400e997ece037f9accf148a21c408f950dc829db1e4e23576a7f9fe0efa79fd5c9d2f
-  languageName: node
-  linkType: hard
-
 "superagent@npm:^9.0.1":
   version: 9.0.2
   resolution: "superagent@npm:9.0.2"
@@ -45258,16 +45221,6 @@ __metadata:
   languageName: node
   linkType: hard
 
-"supertest@npm:^6.2.4":
-  version: 6.3.4
-  resolution: "supertest@npm:6.3.4"
-  dependencies:
-    methods: ^1.1.2
-    superagent: ^8.1.2
-  checksum: 875c6fa7940f21e5be9bb646579cdb030d4057bf2da643e125e1f0480add1200395d2b17e10b8e54e1009efc63e047422501e9eb30e12828668498c0910f295f
-  languageName: node
-  linkType: hard
-
 "supertest@npm:^7.0.0":
   version: 7.0.0
   resolution: "supertest@npm:7.0.0"