scripted-diff: test: remove 'descriptors=True' argument for createwallet calls

Descriptor wallets are already created by default since v23.0, but
since the recent legacy wallet removal this parameter *must* be True
(see commit 9f04e02ffa), i.e. still
passing it wouldn't contain any information for test readers
anymore. So simply drop them in the functional tests in order to
reduce code bloat.

-BEGIN VERIFY SCRIPT-
sed -i 's/, descriptors=True//g' $(git ls-files -- 'test/functional' ':(exclude)test/functional/wallet_backwards_compatibility.py')
sed -i '/descriptors=True,/d' ./test/functional/mempool_persist.py
-END VERIFY SCRIPT-

test/functional/wallet_basic.py

@@ -606,7 +606,7 @@ class WalletTest(BitcoinTestFramework):
         # Prevent race of listunspent with outstanding TxAddedToMempool notifications
         self.nodes[0].syncwithvalidationinterfacequeue()
         # Now import the descriptors, make sure we can identify on which descriptor each coin was received.
-        self.nodes[0].createwallet(wallet_name="wo", descriptors=True, disable_private_keys=True)
+        self.nodes[0].createwallet(wallet_name="wo", disable_private_keys=True)
         wo_wallet = self.nodes[0].get_wallet_rpc("wo")
         wo_wallet.importdescriptors([
             {