Inline private method

Change-Id: Id321fbaaea0c7870edbfe2516e53baf7b012fb82
diff --git a/src/main/java/com/ericsson/gerrit/plugins/eventslog/EventsLogConfig.java b/src/main/java/com/ericsson/gerrit/plugins/eventslog/EventsLogConfig.java
index 24dffe7..f224b34 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/eventslog/EventsLogConfig.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/eventslog/EventsLogConfig.java
@@ -79,16 +79,12 @@
     defaultUrl = "jdbc:h2:" + site.data_dir.toString() + "/db";
     storeUrl = cfg.getString(CONFIG_URL, defaultUrl);
     localStorePath = Paths.get(cfg.getString(CONFIG_LOCAL_PATH, defaultLocalPath));
-    urlOptions = concatenate(cfg.getStringList(CONFIG_URL_OPTIONS));
+    urlOptions = Joiner.on(";").join(cfg.getStringList(CONFIG_URL_OPTIONS));
     storeUsername = cfg.getString(CONFIG_USERNAME);
     storePassword = cfg.getString(CONFIG_PASSWORD);
     evictIdleTime = cfg.getInt(CONFIG_EVICT_IDLE_TIME, DEFAULT_EVICT_IDLE_TIME);
   }
 
-  private String concatenate(String[] stringList) {
-    return Joiner.on(";").join(stringList);
-  }
-
   public int getMaxAge() {
     return maxAge;
   }