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/rpc_createmultisig.py

@@ -46,7 +46,6 @@ class RpcCreateMultiSigTest(BitcoinTestFramework):
 
         self.log.info('Generating blocks ...')
         self.generate(node0, 149)
-        self.sync_all()
 
         self.moved = 0
         for self.nkeys in [3, 5]:
@@ -117,7 +116,6 @@ class RpcCreateMultiSigTest(BitcoinTestFramework):
     def checkbalances(self):
         node0, node1, node2 = self.nodes
         self.generate(node0, COINBASE_MATURITY)
-        self.sync_all()
 
         bal0 = node0.getbalance()
         bal1 = node1.getbalance()