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/feature_coinstatsindex.py

@@ -72,8 +72,6 @@ class CoinStatsIndexTest(BitcoinTestFramework):
         node.sendtoaddress(address=address, amount=10, subtractfeefromamount=True)
         self.generate(node, 1)
 
-        self.sync_blocks(timeout=120)
-
         self.log.info("Test that gettxoutsetinfo() output is consistent with or without coinstatsindex option")
         res0 = node.gettxoutsetinfo('none')
 
@@ -170,7 +168,6 @@ class CoinStatsIndexTest(BitcoinTestFramework):
 
         # Include both txs in a block
         self.generate(self.nodes[0], 1)
-        self.sync_all()
 
         for hash_option in index_hash_options:
             # Check all amounts were registered correctly
@@ -271,7 +268,6 @@ class CoinStatsIndexTest(BitcoinTestFramework):
         # Add another block, so we don't depend on reconsiderblock remembering which
         # blocks were touched by invalidateblock
         self.generate(index_node, 1)
-        self.sync_all()
 
         # Ensure that removing and re-adding blocks yields consistent results
         block = index_node.getblockhash(99)