remove zmergetoaddress from experimental state in rpc-tests

qa/rpc-tests/mergetoaddress_helper.py

@@ -41,12 +41,12 @@ class MergeToAddressHelper:
         initialize_chain_clean(test.options.tmpdir, 4)
 
     def setup_network(self, test, additional_args=[]):
-        args = ['-debug=zrpcunsafe', '-experimentalfeatures', '-zmergetoaddress']
+        args = ['-debug=zrpcunsafe']
         args += additional_args
         test.nodes = []
         test.nodes.append(start_node(0, test.options.tmpdir, args))
         test.nodes.append(start_node(1, test.options.tmpdir, args))
-        args2 = ['-debug=zrpcunsafe', '-experimentalfeatures', '-zmergetoaddress', '-mempooltxinputlimit=7']
+        args2 = ['-debug=zrpcunsafe', '-mempooltxinputlimit=7']
         args2 += additional_args
         test.nodes.append(start_node(2, test.options.tmpdir, args2))
         connect_nodes_bi(test.nodes, 0, 1)

qa/rpc-tests/mergetoaddress_mixednotes.py

@@ -14,9 +14,7 @@ from mergetoaddress_helper import assert_mergetoaddress_exception
 
 class MergeToAddressMixedNotes(BitcoinTestFramework):
     def setup_nodes(self):
-        return start_nodes(4, self.options.tmpdir, [[
-            '-experimentalfeatures', '-zmergetoaddress'
-        ]] * 4)
+        return start_nodes(4, self.options.tmpdir)
 
     def setup_chain(self):
         print("Initializing test directory " + self.options.tmpdir)

qa/rpc-tests/wallet_changeaddresses.py

@@ -27,8 +27,7 @@ class WalletChangeAddressesTest(BitcoinTestFramework):
         args = [
             '-nuparams=5ba81b19:1', # Overwinter
             '-nuparams=76b809bb:1', # Sapling
-            '-txindex',             # Avoid JSONRPC error: No information available about transaction
-            '-experimentalfeatures', '-zmergetoaddress',
+            '-txindex'              # Avoid JSONRPC error: No information available about transaction
         ]
         self.nodes = []
         self.nodes.append(start_node(0, self.options.tmpdir, args))

qa/rpc-tests/wallet_sapling.py

@@ -20,9 +20,7 @@ from decimal import Decimal
 class WalletSaplingTest(BitcoinTestFramework):
 
     def setup_nodes(self):
-        return start_nodes(4, self.options.tmpdir, [[
-            '-experimentalfeatures', '-zmergetoaddress',
-        ]] * 4)
+        return start_nodes(4, self.options.tmpdir)
 
     def run_test(self):
         # Sanity-check the test harness