test: Remove wallet option from non-wallet tests

Review note: The changes are complete, because self.options.descriptors
is set to None in parse_args (test_framework.py).

A value of None implies -disablewallet, see the previous commit.

So if a call to add_wallet_options is missing, it will lead to a test
failure when the wallet is compiled in.

test/functional/wallet_sendall.py

@@ -26,6 +26,9 @@ def cleanup(func):
 
 class SendallTest(BitcoinTestFramework):
     # Setup and helpers
+    def add_options(self, parser):
+        self.add_wallet_options(parser)
+
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()