refactor(@schematics/angular): deprecate options that are unused

Author: alan-agius4

packages/schematics/angular/app-shell/schema.json

@@ -23,7 +23,8 @@
     "name": {
       "type": "string",
       "format": "html-selector",
-      "description": "The HTML selector of the Universal app"
+      "description": "The HTML selector of the Universal app",
+      "x-deprecated": "This option has no effect."
     },
     "appId": {
       "type": "string",
@@ -35,19 +36,22 @@
       "type": "string",
       "format": "path",
       "description": "The output directory for build results.",
-      "default": "dist-server"
+      "default": "dist-server",
+      "x-deprecated": "This option has no effect."
     },
     "root": {
       "type": "string",
       "format": "path",
       "description": "The root directory of the app.",
-      "default": "src"
+      "default": "src",
+      "x-deprecated": "This option has no effect."
     },
     "index": {
       "type": "string",
       "format": "path",
       "description": "The name of the index file",
-      "default": "index.html"
+      "default": "index.html",
+      "x-deprecated": "This option has no effect."
     },
     "main": {
       "type": "string",
@@ -58,7 +62,8 @@
     "test": {
       "type": "string",
       "format": "path",
-      "description": "The name of the test entry-point file."
+      "description": "The name of the test entry-point file.",
+      "x-deprecated": "This option has no effect."
     },
     "tsconfigFileName": {
       "type": "string",
@@ -70,7 +75,8 @@
       "type": "string",
       "format": "path",
       "description": "The name of the TypeScript configuration file for tests.",
-      "default": "tsconfig.spec"
+      "default": "tsconfig.spec",
+      "x-deprecated": "This option has no effect."
     },
     "appDir": {
       "type": "string",
@@ -95,7 +101,8 @@
       "format": "path",
       "description": "The path of the source directory.",
       "default": "src",
-      "alias": "D"
+      "alias": "D",
+      "x-deprecated": "This option has no effect."
     }
   },
   "required": [

packages/schematics/angular/universal/schema.json

@@ -24,7 +24,8 @@
     "test": {
       "type": "string",
       "format": "path",
-      "description": "The name of the test entry-point file."
+      "description": "The name of the test entry-point file.",
+      "x-deprecated": "This option has no effect."
     },
     "tsconfigFileName": {
       "type": "string",
@@ -35,7 +36,8 @@
       "type": "string",
       "format": "path",
       "description": "The name of the TypeScript configuration file for tests.",
-      "default": "tsconfig.spec"
+      "default": "tsconfig.spec",
+      "x-deprecated": "This option has no effect."
     },
     "appDir": {
       "type": "string",