滥用防护

@@ -54,7 +54,6 @@ class ApiCache {
                 if (err) console.error(err);
 
                 if (result.length === 0) {
-                    this._log('empty items');
                     resolve([]);
                 }
                 // for each server...
@@ -65,7 +64,6 @@ class ApiCache {
                     var len = keys.length;
 
                     if (keys.length === 0) {
-                        this._log('empty item set');
                         resolve([]);
                     }
                     const keyList = [];