diff --git a/packages/io/src/io.ts b/packages/io/src/io.ts
index a7f65a9c..255dc0fa 100644
--- a/packages/io/src/io.ts
+++ b/packages/io/src/io.ts
@@ -4,8 +4,6 @@ import * as path from 'path'
 import {promisify} from 'util'
 import * as ioUtil from './io-util'
 
-const execFile = promisify(childProcess.execFile)
-
 /**
  * Interface for cp/mv options
  */