Lower the FST delete query interval to 60 seconds

eos.sysconfig

@@ -89,6 +89,9 @@ export EOS_CONVERTER_DRIVER=1
 # Stream timeout for operations
 #export EOS_FST_STREAM_TIMEOUT=300
 
+# Specify in seconds how often FSTs should query for new delete operations
+export EOS_FST_DELETE_QUERY_INTERVAL=60
+
 # Number of threads for transfer operations (Balance, Drain or Transfer actions)
 export EOS_FST_TRANSFER_THREAD_POOL=20