Remove obsolete cache reset

src/oplog/Cache.js

@@ -26,6 +26,7 @@ class Cache {
   }
 
   static loadCache(cacheFile) {
+    cache = {};
     return new Promise((resolve, reject) => {
       if(cacheFile) {
         filePath = cacheFile;

src/stores/Store.js

@@ -25,7 +25,6 @@ class Store {
   use() {
     this.events.emit('load', this.dbname);
     this._oplog = new Log(this._ipfs, this.id, this.dbname, this.options);
-    Cache.reset();
     return Cache.loadCache(this.options.cacheFile).then(() => {
       const cached = Cache.get(this.dbname);
       if(cached) {