Let's go

Signed-off-by: Xuanwo <github@xuanwo.io>

.github/workflows/test.yml

@@ -34,4 +34,4 @@ jobs:
         shell: bash
         run: |
           ls /opt/hostedtoolcache/sccache/0.3.3/x64/ -lh
-          ${SCCACHE_PATH} --stat
+          ${SCCACHE_PATH} --show-stats

src/sccache.ts

@@ -5,9 +5,6 @@ import {
   extractZip,
   cacheDir
 } from '@actions/tool-cache';
-import {exec} from 'child_process';
-import * as fs from 'fs';
-import {promisify} from 'util';
 
 async function setup() {
   // TODO:  we can support install latest version by default if version