Configuration: Remove unnecessary usage of 'this'

Change-Id: I9001c5c74e8497d4b0f7864433d4cb141a38a854
diff --git a/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java b/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
index 4fa0b3f..e813bb6 100644
--- a/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
+++ b/src/main/java/com/ericsson/gerrit/plugins/highavailability/Configuration.java
@@ -196,11 +196,11 @@
     private final long pollSec;
 
     public AutoReindex(Config cfg) {
-      this.enabled = cfg.getBoolean(AUTO_REINDEX_SECTION, ENABLED, DEFAULT_AUTO_REINDEX);
-      this.delaySec =
+      enabled = cfg.getBoolean(AUTO_REINDEX_SECTION, ENABLED, DEFAULT_AUTO_REINDEX);
+      delaySec =
           ConfigUtil.getTimeUnit(
               cfg, AUTO_REINDEX_SECTION, null, DELAY, DEFAULT_DELAY, TimeUnit.SECONDS);
-      this.pollSec =
+      pollSec =
           ConfigUtil.getTimeUnit(
               cfg,
               AUTO_REINDEX_SECTION,
@@ -460,7 +460,7 @@
 
     private Websession(Config cfg) {
       super(cfg, WEBSESSION_SECTION);
-      this.cleanupInterval =
+      cleanupInterval =
           ConfigUtil.getTimeUnit(
               Strings.nullToEmpty(cfg.getString(WEBSESSION_SECTION, null, CLEANUP_INTERVAL_KEY)),
               DEFAULT_CLEANUP_INTERVAL_MS,