Fix issues found by FindBugs: UPM_UNCALLED_PRIVATE_METHOD

http://findbugs.sourceforge.net/bugDescriptions.html#UPM_UNCALLED_PRIVATE_METHOD

Commented-out uncalled private methods.
Already confirmed by Teru that currently those are not needed.
Keeping them around, just in case they are needed again during the code
refactoring.

Change-Id: I12d00d674d4990207c06c46f3a1cf7d9a4ae151b
diff --git a/src/main/java/net/onrc/onos/apps/proxyarp/ProxyArpManager.java b/src/main/java/net/onrc/onos/apps/proxyarp/ProxyArpManager.java
index d7e94cb..76243e9 100644
--- a/src/main/java/net/onrc/onos/apps/proxyarp/ProxyArpManager.java
+++ b/src/main/java/net/onrc/onos/apps/proxyarp/ProxyArpManager.java
@@ -676,11 +676,14 @@
         singlePacketOutEventChannel.addTransientEntry(MACAddress.valueOf(senderMacAddress).toLong(), key);
     }
 
+    /*
     private void sendArpRequestToSwitches(InetAddress dstAddress, byte[] arpRequest) {
         sendArpRequestToSwitches(dstAddress, arpRequest, 0,
                 OFPort.OFPP_NONE.getValue());
     }
+    */
 
+    /*
     private void sendArpRequestToSwitches(InetAddress dstAddress,
                                           byte[] arpRequest, long inSwitch, short inPort) {
 
@@ -707,6 +710,7 @@
             broadcastArpRequestOutMyEdge(arpRequest, inSwitch, inPort);
         }
     }
+    */
 
     private void sendArpReplyNotification(Ethernet eth, OFPacketIn pi) {
         ARP arp = (ARP) eth.getPayload();