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_signer.py

@@ -112,7 +112,6 @@ class WalletSignerTest(BitcoinTestFramework):
         self.log.info('Prepare mock PSBT')
         self.nodes[0].sendtoaddress(address1, 1)
         self.generate(self.nodes[0], 1)
-        self.sync_all()
 
         # Load private key into wallet to generate a signed PSBT for the mock
         self.nodes[1].createwallet(wallet_name="mock", disable_private_keys=False, blank=True, descriptors=True)