[cmx] remove duplicate schema file

Schema file for cmx validation is now located at tools/cmx/schema.json.
This file should have been deleted when that file was added, so delete
it now.

TEST: can still build fuchsia successfully
Change-Id: Idf17f206e4a35879cb73fb6e4beb8518716aad39
diff --git a/cmx/cmx_schema.json b/cmx/cmx_schema.json
deleted file mode 100644
index 358ff71..0000000
--- a/cmx/cmx_schema.json
+++ /dev/null
@@ -1,156 +0,0 @@
-{
-  "type": "object",
-  "$schema": "http://json-schema.org/draft-07/schema#",
-  "required": [
-    "program"
-  ],
-  "properties": {
-    "program": {
-      "$id": "/properties/program",
-      "type": "object",
-      "properties": {
-        "binary": {
-          "$id": "/properties/program/properties/binary",
-          "type": "string",
-          "title": "Program entry point for an Elf binary",
-          "examples": [
-            "bin/app"
-          ]
-        },
-        "args": {
-          "$id": "/properties/program/properties/args",
-          "type": "array",
-          "title": "Arguments to provide to an Elf binary",
-          "items": {
-            "type": "string"
-          },
-          "minItems": 1,
-          "examples": [
-            "--verbose"
-          ]
-        },
-        "data": {
-          "$id": "/properties/program/properties/data",
-          "type": "string",
-          "title": "Relative path for dart/flutter assets within /pkg/data",
-          "examples": [
-            "data/component"
-          ]
-        }
-      },
-      "dependencies": {
-        "args": [ "binary" ]
-      },
-      "oneOf": [
-        {
-          "required": [ "binary" ]
-        },
-        {
-          "required": [ "data" ]
-        }
-      ]
-    },
-    "sandbox": {
-      "$id": "/properties/sandbox",
-      "type": "object",
-      "properties": {
-        "features": {
-          "$id": "/properties/sandbox/properties/features",
-          "type": "array",
-          "uniqueItems": true,
-          "items": {
-            "$id": "/properties/sandbox/properties/features/items",
-            "type": "string",
-            "title": "Specific environment features",
-            "enum": [
-              "build-info",
-              "persistent-storage",
-              "shell",
-              "shell-commands",
-              "root-ssl-certificates",
-              "system-temp",
-              "vulkan"
-            ]
-          }
-        },
-        "system": {
-          "$id": "/properties/sandbox/properties/system",
-          "type": "array",
-          "uniqueItems": true,
-          "items": {
-            "$id": "/properties/sandbox/properties/system/items",
-            "type": "string",
-            "title": "Paths within the system package provided to the component",
-            "examples": [
-              "data/build"
-            ]
-          }
-        },
-        "pkgfs": {
-          "$id": "/properties/sandbox/properties/pkgfs",
-          "type": "array",
-          "uniqueItems": true,
-          "items": {
-            "$id": "/properties/sandbox/properties/pkgfs/items",
-            "type": "string",
-            "title": "Paths within pkgfs provided to the component",
-            "examples": [
-              "packages"
-            ]
-          }
-        },
-        "boot": {
-          "$id": "/properties/sandbox/properties/boot",
-          "type": "array",
-          "uniqueItems": true,
-          "items": {
-            "$id": "/properties/sandbox/properties/boot/items",
-            "type": "string",
-            "title": "Paths within the boot package provided to the component",
-            "examples": [
-              "log"
-            ]
-          }
-        },
-        "services": {
-          "$id": "/properties/sandbox/properties/services",
-          "type": "array",
-          "uniqueItems": true,
-          "items": {
-            "$id": "/properties/sandbox/properties/services/items",
-            "type": "string",
-            "title": "Services to provide",
-            "examples": [
-              "fuchsia.sys.Launcher",
-              "fuchsia.sys.Environment"
-            ]
-          }
-        }
-      }
-    },
-    "dev": {
-      "$id": "/properties/dev",
-      "type": "array",
-      "uniqueItems": true,
-      "items": {
-        "$id": "/properties/dev/items",
-        "type": "string",
-        "title": "Device directories to provide",
-        "examples": [
-          "class/wlanphy",
-          "class/wlanif",
-          "class/thermal"
-        ]
-      }
-    },
-    "runner": {
-      "$id": "/properties/runner",
-      "type": "string",
-      "title": "Runner required to launch the component",
-      "examples": [
-        "flutter_jit_runner",
-        "flutter_aot_runner"
-      ]
-    }
-  }
-}