Remove unused variable

Author: smashwilson

lib/git-shell-out-strategy.js

@@ -117,8 +117,8 @@ export default class GitShellOutStrategy {
 
     if (execPathPromise === null) {
       // Attempt to collect the --exec-path from a native git installation.
-      execPathPromise = new Promise((resolve, reject) => {
-        childProcess.exec('git --exec-path', (error, stdout, stderr) => {
+      execPathPromise = new Promise(resolve => {
+        childProcess.exec('git --exec-path', (error, stdout) => {
           /* istanbul ignore if */
           if (error) {
             // Oh well