scripted-diff: Use generate* from TestFramework

-BEGIN VERIFY SCRIPT-
 sed --regexp-extended -i \
     's/((self\.)?(nodes\[[^]]+\]|[a-z_]*(wallet|node)[0-9a-z_]*))\.(generate(|toaddress|block|todescriptor)(\(|, ))/self.\5\1, /g' \
     $(git grep -l generate ./test | grep -v 'test_framework/' | grep -v 'feature_rbf')
-END VERIFY SCRIPT-

test/functional/p2p_leak_tx.py

@@ -27,8 +27,8 @@ class P2PLeakTxTest(BitcoinTestFramework):
         gen_node = self.nodes[0]  # The block and tx generating node
         miniwallet = MiniWallet(gen_node)
         # Add enough mature utxos to the wallet, so that all txs spend confirmed coins
-        miniwallet.generate(1)
-        gen_node.generate(COINBASE_MATURITY)
+        self.generate(miniwallet, 1)
+        self.generate(gen_node, COINBASE_MATURITY)
 
         inbound_peer = self.nodes[0].add_p2p_connection(P2PNode())  # An "attacking" inbound peer