test: remove unnecessary -datacarriersize args from tests

test/functional/feature_blocksxor.py

@@ -23,7 +23,6 @@ class BlocksXORTest(BitcoinTestFramework):
         self.extra_args = [[
             '-blocksxor=1',
             '-fastprune=1',             # use smaller block files
-            '-datacarriersize=100000',  # needed to pad transaction with MiniWallet
         ]]
 
     def run_test(self):