diff --git a/packages/kbn-interpreter/tasks/build/server_code_transformer.js b/packages/kbn-interpreter/tasks/build/server_code_transformer.js
deleted file mode 100644
index 4bd9220993c62..0000000000000
--- a/packages/kbn-interpreter/tasks/build/server_code_transformer.js
+++ /dev/null
@@ -1,43 +0,0 @@
-/*
- * Licensed to Elasticsearch B.V. under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch B.V. licenses this file to you under
- * the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-const { extname } = require('path');
-
-const { transform } = require('@babel/core');
-
-exports.createServerCodeTransformer = sourceMaps => {
-  return (content, path) => {
-    switch (extname(path)) {
-      case '.js':
-        const { code = '' } = transform(content.toString('utf8'), {
-          filename: path,
-          ast: false,
-          code: true,
-          sourceMaps: sourceMaps ? 'inline' : false,
-          babelrc: false,
-          presets: [require.resolve('@kbn/babel-preset/webpack_preset')],
-        });
-
-        return code;
-
-      default:
-        return content.toString('utf8');
-    }
-  };
-};
diff --git a/packages/kbn-interpreter/tasks/build/server_code_transformer.test.js b/packages/kbn-interpreter/tasks/build/server_code_transformer.test.js
deleted file mode 100644
index 519e529c20bf5..0000000000000
--- a/packages/kbn-interpreter/tasks/build/server_code_transformer.test.js
+++ /dev/null
@@ -1,48 +0,0 @@
-/*
- * Licensed to Elasticsearch B.V. under one or more contributor
- * license agreements. See the NOTICE file distributed with
- * this work for additional information regarding copyright
- * ownership. Elasticsearch B.V. licenses this file to you under
- * the Apache License, Version 2.0 (the "License"); you may
- * not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *    http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied.  See the License for the
- * specific language governing permissions and limitations
- * under the License.
- */
-
-import { readFileSync } from 'fs';
-import { resolve } from 'path';
-import { createServerCodeTransformer } from './server_code_transformer';
-
-const JS_FIXTURE_PATH = resolve(__dirname, '__fixtures__/sample.js');
-const JS_FIXTURE = readFileSync(JS_FIXTURE_PATH);
-
-describe('js support', () => {
-  it('transpiles js file', () => {
-    const transformer = createServerCodeTransformer();
-    expect(transformer(JS_FIXTURE, JS_FIXTURE_PATH)).toMatchInlineSnapshot(`
-"\\"use strict\\";
-
-var _util = _interopRequireDefault(require(\\"util\\"));
-
-function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
-
-/* eslint-disable */
-console.log(_util.default.format('hello world'));"
-`);
-  });
-
-  it('throws errors for js syntax errors', () => {
-    const transformer = createServerCodeTransformer();
-    expect(() => transformer(Buffer.from(`export default 'foo`), JS_FIXTURE_PATH)).toThrowError(
-      /Unterminated string constant/
-    );
-  });
-});