watcher: removed calibrating with round clock in ticker trigger engine

Closes elastic/elasticsearch#749

Original commit: elastic/x-pack-elasticsearch@f9f2db50d5

watcher/docs/release-notes.asciidoc

@@ -36,6 +36,12 @@ bin/plugin remove watcher
 [[change-list]]
 === Change List
 
+[float]
+==== 2.0.0
+
+.Bug fixes
+* Fixed an issue where the scheduler may get stuck during Watcher startup. This caused no watches to ever fire.
+
 [float]
 ==== 2.0.0-rc1
 

watcher/src/main/java/org/elasticsearch/watcher/trigger/schedule/engine/TickerScheduleTriggerEngine.java

@@ -136,10 +136,6 @@ public class TickerScheduleTriggerEngine extends ScheduleTriggerEngine {
 
         @Override
         public void run() {
-
-            // calibrate with round clock
-            while (clock.millis() % 1000 > 15) {
-            }
             while (active) {
                 logger.trace("checking jobs [{}]", clock.nowUTC());
                 checkJobs();