clean imports

Author: gfreezy

editors/code/src/toolchain.ts

@@ -3,7 +3,7 @@ import * as os from 'os';
 import * as path from 'path';
 import * as readline from 'readline';
 import * as vscode from 'vscode';
-import { execute, log, memoize, memoizeAsync } from './util';
+import { execute, log, memoizeAsync } from './util';
 
 interface CompilationArtifact {
     fileName: string;