nuke the whole npm cache, not parts of it

seems nuking parts breaks it 🤷

puppet/modules/jenkins_node/templates/npm_cleaner.sh.erb

@@ -1,4 +1,4 @@
 #!/bin/sh
 
 find <%= @homedir %>/tmp -maxdepth 1 -name 'npm-*' -type d -mtime +1 -exec rm -rf {} +
-find <%= @homedir %>/.npm/_cacache/ -type f -mtime +3 -delete
+rm -rf <%= @homedir %>/.npm/_cacache/