Revert "Improved Jenkins plugin installing"

This reverts commit bd692e97b54b69442dffc0d700479799c453f8c7.

Change-Id: I14fb5a6fb87f6cf0ac7897f01c2a8b2bbfc64864
diff --git a/_states/jenkins_plugin.py b/_states/jenkins_plugin.py
index 6c2b0d4..4956751 100644
--- a/_states/jenkins_plugin.py
+++ b/_states/jenkins_plugin.py
@@ -33,9 +33,6 @@
   }}
 }}else{{
     exists = true
-    if({restart}){{
-      instance.doSafeRestart()
-    }}
     print("EXISTS")
 }}
 if (installed) {{