Clean up dhcp no-op logging

bug:10553167
Change-Id: I1f6feb9a44e17d45ffc9f28b37bf5690230a3ade
diff --git a/services/core/java/com/android/server/ConnectivityService.java b/services/core/java/com/android/server/ConnectivityService.java
index 6574898..64ab3e4 100644
--- a/services/core/java/com/android/server/ConnectivityService.java
+++ b/services/core/java/com/android/server/ConnectivityService.java
@@ -2435,9 +2435,9 @@
                                     "\n   car=" + car);
                         }
                     } else {
-                        if (DBG) {
-                            log("handleConnectivityChange: address are the same reset per doReset" +
-                                   " linkProperty[" + netType + "]:" +
+                        if (VDBG) {
+                            log("handleConnectivityChange: addresses are the same reset per" +
+                                   " doReset linkProperty[" + netType + "]:" +
                                    " resetMask=" + resetMask);
                         }
                     }