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/feature_maxuploadtarget.py

@@ -124,7 +124,7 @@ class MaxUploadTest(BitcoinTestFramework):
         # the test has been running so far).
         with self.nodes[0].assert_debug_log(expected_msgs=["historical block serving limit reached, disconnecting peer=0"]):
             for _ in range(3):
-                p2p_conns[0].send_message(getdata_request)
+                p2p_conns[0].send_without_ping(getdata_request)
             p2p_conns[0].wait_for_disconnect()
         assert_equal(len(self.nodes[0].getpeerinfo()), 2)
         self.log.info("Peer 0 disconnected after downloading old block too many times")
@@ -148,7 +148,7 @@ class MaxUploadTest(BitcoinTestFramework):
         # But if p2p_conns[1] tries for an old block, it gets disconnected too.
         getdata_request.inv = [CInv(MSG_BLOCK, big_old_block)]
         with self.nodes[0].assert_debug_log(expected_msgs=["historical block serving limit reached, disconnecting peer=1"]):
-            p2p_conns[1].send_message(getdata_request)
+            p2p_conns[1].send_without_ping(getdata_request)
             p2p_conns[1].wait_for_disconnect()
         assert_equal(len(self.nodes[0].getpeerinfo()), 1)
 
@@ -198,7 +198,7 @@ class MaxUploadTest(BitcoinTestFramework):
 
         self.log.info("Peer gets disconnected for a mempool request after limit is reached")
         with self.nodes[0].assert_debug_log(expected_msgs=["mempool request with bandwidth limit reached, disconnecting peer=0"]):
-            peer.send_message(msg_mempool())
+            peer.send_without_ping(msg_mempool())
             peer.wait_for_disconnect()
 
         self.log.info("Test passing an unparsable value to -maxuploadtarget throws an error")