master: remove hard coded filer settings in master.toml

fix https://github.com/chrislusf/seaweedfs/issues/2529

weed/command/scaffold/master.toml

@@ -19,9 +19,6 @@ scripts = """
 """
 sleep_minutes = 17          # sleep minutes between each script execution
 
-[master.filer]
-default = "localhost:8888"    # used by maintenance scripts if the scripts needs to use fs related commands
-
 
 [master.sequencer]
 type = "raft"     # Choose [raft|snowflake] type for storing the file id sequence