Remove S3 File Adapter (#7324)

* remove s3 adapter

* moved mock files adapter

* Update package-lock.json

spec/dependencies/mock-files-adapter/index.js

@@ -0,0 +1,31 @@
+/**
+ * A mock files adapter for testing.
+ */
+class MockFilesAdapter {
+  constructor(options = {}) {
+    if (options.throw) {
+      throw 'MockFilesAdapterConstructor';
+    }
+  }
+  createFile() {
+    return 'MockFilesAdapterCreateFile';
+  }
+  deleteFile() {
+    return 'MockFilesAdapterDeleteFile';
+  }
+  getFileData() {
+    return 'MockFilesAdapterGetFileData';
+  }
+  getFileLocation() {
+    return 'MockFilesAdapterGetFileLocation';
+  }
+  validateFilename() {
+    return 'MockFilesAdapterValidateFilename';
+  }
+  handleFileStream() {
+    return 'MockFilesAdapterHandleFileStream';
+  }
+}
+
+module.exports = MockFilesAdapter;
+module.exports.default = MockFilesAdapter;

spec/dependencies/mock-files-adapter/package.json

@@ -0,0 +1,6 @@
+{
+  "name": "mock-files-adapter",
+  "version": "1.0.0",
+  "description": "Mock files adapter for tests.",
+  "main": "index.js"
+}