#1246: restore first rm -Rfs but remove those in packaging stage

Jenkinsfile

@@ -21,6 +21,7 @@ pipeline {
         stash name: 'ride-win', includes: '_/ride*/Ride-*-win32-ia32/**'
         stash name: 'ride-linux', includes: '_/ride*/Ride-*-linux*/**'
         stash name: 'ride-version', includes: '_/version, _/version.js'
+	sh 'rm -Rf _'
       }
     }
     stage ('Packaging') {
@@ -38,7 +39,6 @@ pipeline {
             unstash 'ride-version'
             sh './CI/packagescripts/linux/packageLinux.sh'
             stash name: 'linux-ship', includes: 'ship/*'
-            sh 'rm -Rf _ ship'
           }
         }
         stage ('Mac Build and Packaging') {
@@ -54,7 +54,6 @@ pipeline {
             }
             stash name: 'ride-mac', includes: '_/ride*/Ride-*-darwin*/**'
             stash name: 'mac-ship', includes: 'ship/*'
-            sh 'rm -Rf _ ship'
           }
         }
         stage ('Windows Packaging') {
@@ -68,8 +67,6 @@ pipeline {
             unstash 'ride-version'
             bat './CI/packagescripts/windows/packageWindows.bat'
             stash name: 'win-ship', includes: 'ship/*'
-            powershell 'remove-item ship -Recurse -Force'
-            powershell 'remove-item _ -Recurse -Force'
           }
         }
       }