stops an instance from removing packet requests upon deactivation

Change-Id: I4ac7536ab5d10e0a08ae5af1c7ad9900ab99b139
diff --git a/core/net/src/main/java/org/onosproject/net/packet/impl/PacketManager.java b/core/net/src/main/java/org/onosproject/net/packet/impl/PacketManager.java
index 0337987..b39238d 100644
--- a/core/net/src/main/java/org/onosproject/net/packet/impl/PacketManager.java
+++ b/core/net/src/main/java/org/onosproject/net/packet/impl/PacketManager.java
@@ -121,7 +121,6 @@
     public void deactivate() {
         store.unsetDelegate(delegate);
         deviceService.removeListener(deviceListener);
-        store.existingRequests().forEach(this::removeFromAllDevices);
         eventHandlingExecutor.shutdown();
         log.info("Stopped");
     }