scripted-diff: Remove redundant sync_all and sync_blocks

The sync calls are redundant after a call to generate, because generate
already syncs itself.

-BEGIN VERIFY SCRIPT-
perl -0777 -pi -e 's/(generate[^\n]*\)[^\n]*)(\n|\s)+self.sync_(all|blocks)\([^\)]*\)\n/\1\n/g' $(git grep -l generate ./test)
-END VERIFY SCRIPT-

test/functional/wallet_abandonconflict.py

@@ -30,7 +30,6 @@ class AbandonConflictTest(BitcoinTestFramework):
 
     def run_test(self):
         self.generate(self.nodes[1], COINBASE_MATURITY)
-        self.sync_blocks()
         balance = self.nodes[0].getbalance()
         txA = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), Decimal("10"))
         txB = self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), Decimal("10"))