Replaced unsupported cron manager with new one

app/.meteor/packages

@@ -22,7 +22,6 @@ standard-minifier-js@2.8.0
 shell-server@0.5.0
 ecmascript@0.16.1
 es5-shim@4.8.0
-percolate:synced-cron
 service-configuration@1.3.0
 dynamic-import@0.7.2
 ddp-rate-limiter@1.1.0
@@ -47,3 +46,4 @@ meteortesting:mocha
 ostrio:files
 simple:rest-bearer-token-parser
 simple:rest-json-error-handler
+littledata:synced-cron