Disable log reloading by default (#9966)

* Disable log reloading by default

This disables the log reloading that was enabled by default. The problem
is that the log reload implementation of `tracing` is using a lock to
make the layer replaceable. This lock needs to be locked every time we
need to check if a particular target is enabled (assuming the log level
is high enough). This kills the performance when for example
`sometarget=trace` logging is enabled.

* 🤦

* Remove unused parameter

* Fix test

* Fix

substrate/client/service/test/src/lib.rs

@@ -274,7 +274,6 @@ fn node_config<
 		announce_block: true,
 		base_path: Some(BasePath::new(root)),
 		informant_output_format: Default::default(),
-		disable_log_reloading: false,
 	}
 }