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/p2p_timeouts.py

@@ -67,10 +67,10 @@ class TimeoutsTest(BitcoinTestFramework):
         assert no_send_node.is_connected
 
         with self.nodes[0].assert_debug_log(['Unsupported message "ping" prior to verack from peer=0']):
-            no_verack_node.send_message(msg_ping())
+            no_verack_node.send_without_ping(msg_ping())
 
         with self.nodes[0].assert_debug_log(['non-version message before version handshake. Message "ping" from peer=1']):
-            no_version_node.send_message(msg_ping())
+            no_version_node.send_without_ping(msg_ping())
 
         self.mock_forward(1)
         assert "version" in no_verack_node.last_message
@@ -79,8 +79,8 @@ class TimeoutsTest(BitcoinTestFramework):
         assert no_version_node.is_connected
         assert no_send_node.is_connected
 
-        no_verack_node.send_message(msg_ping())
-        no_version_node.send_message(msg_ping())
+        no_verack_node.send_without_ping(msg_ping())
+        no_version_node.send_without_ping(msg_ping())
 
         if self.options.v2transport:
             expected_timeout_logs = [