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/mempool_accept.py

@@ -78,7 +78,7 @@ class MempoolAcceptanceTest(BitcoinTestFramework):
             outputs=[{node.getnewaddress(): 0.3}, {node.getnewaddress(): 49}],
         ))['hex']
         txid_in_block = node.sendrawtransaction(hexstring=raw_tx_in_block, maxfeerate=0)
-        node.generate(1)
+        self.generate(node, 1)
         self.mempool_size = 0
         self.check_mempool_result(
             result_expected=[{'txid': txid_in_block, 'allowed': False, 'reject-reason': 'txn-already-known'}],
@@ -172,7 +172,7 @@ class MempoolAcceptanceTest(BitcoinTestFramework):
             outputs=[{node.getnewaddress(): 0.1}]
         ))['hex']
         txid_spend_both = node.sendrawtransaction(hexstring=raw_tx_spend_both, maxfeerate=0)
-        node.generate(1)
+        self.generate(node, 1)
         self.mempool_size = 0
         # Now see if we can add the coins back to the utxo set by sending the exact txs again
         self.check_mempool_result(