Don't try to sync after single device registration

There's no other device to sync to. :p

js/libtextsecure.js

@@ -39378,9 +39378,7 @@ TextSecureServer = function () {
                 return createAccount(number, verificationCode, identityKeyPair).
                     then(function() { return generateKeys(100); }).
                     then(TextSecureServer.registerKeys).
-                    then(textsecure.registration.done).
+                    then(textsecure.registration.done);
-                    then(textsecure.messaging.sendRequestContactSyncMessage).
-                    then(textsecure.messaging.sendRequestGroupSyncMessage);
             });
         },
         registerSecondDevice: function(setProvisioningUrl, confirmNumber, progressCallback) {

libtextsecure/account_manager.js

@@ -35,9 +35,7 @@
                 return createAccount(number, verificationCode, identityKeyPair).
                     then(function() { return generateKeys(100); }).
                     then(TextSecureServer.registerKeys).
-                    then(textsecure.registration.done).
+                    then(textsecure.registration.done);
-                    then(textsecure.messaging.sendRequestContactSyncMessage).
-                    then(textsecure.messaging.sendRequestGroupSyncMessage);
             });
         },
         registerSecondDevice: function(setProvisioningUrl, confirmNumber, progressCallback) {