scripted-diff: test: Rename send_message to send_without_ping

send_message only drops the bytes in a buffer and a sync is needed to
avoid intermittent test issues. Change the name of the method to make
this more apparent during review.

-BEGIN VERIFY SCRIPT-
 sed -i 's/send_message(/send_without_ping(/g' $( git grep -l 'send_message(' )
-END VERIFY SCRIPT-

test/functional/interface_usdt_net.py

@@ -473,7 +473,7 @@ class NetTracepointTest(BitcoinTestFramework):
         for _ in range(EXPECTED_MISBEHAVING_CONNECTIONS):
             testnode = P2PInterface()
             self.nodes[0].add_p2p_connection(testnode)
-            testnode.send_message(msg)
+            testnode.send_without_ping(msg)
             bpf.perf_buffer_poll(timeout=500)
             testnode.peer_disconnect()