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_keypool_topup.py

@@ -66,7 +66,6 @@ class KeypoolRestoreTest(BitcoinTestFramework):
             self.generate(self.nodes[0], 1)
             self.nodes[0].sendtoaddress(addr_extpool, 5)
             self.generate(self.nodes[0], 1)
-            self.sync_blocks()
 
             self.log.info("Restart node with wallet backup")
             self.stop_node(idx)