refactor: deprecated unused server builder options

Author: alan-agius4

packages/angular_devkit/build_angular/src/server/schema.json

@@ -120,12 +120,14 @@
     "vendorChunk": {
       "type": "boolean",
       "description": "Use a separate bundle containing only vendor libraries.",
-      "default": true
+      "default": true,
+      "x-deprecated": "Since version 9. This option has no effect on server platform."
     },
     "commonChunk": {
       "type": "boolean",
       "description": "Use a separate bundle containing code used across multiple bundles.",
-      "default": true
+      "default": true,
+      "x-deprecated": "Since version 9. This option has no effect on server platform."
     },
     "deployUrl": {
       "type": "string",
@@ -212,7 +214,8 @@
     "namedChunks": {
       "type": "boolean",
       "description": "Use file name for lazy loaded chunks.",
-      "default": true
+      "default": true,
+      "x-deprecated": "Since version 9. This option has no effect on server platform."
     },
     "bundleDependencies": {
       "type": "string",