Drop addtional loop_exit_check

We previously introduced an additional `loop_exit_check` in background
processor. Since all reviewers seemed to be skeptical about its
usefulness, we drop it again here.

Author: tnull

lightning-background-processor/src/lib.rs

@@ -399,13 +399,6 @@ macro_rules! define_run_body {
 				last_forwards_processing_call = $get_timer(cur_batch_delay);
 			}
 
-			// Checke whether to exit the loop again, as some time might have passed since we
-			// checked above.
-			if $loop_exit_check {
-				log_trace!($logger, "Terminating background processor.");
-				break;
-			}
-
 			// We wait up to 100ms, but track how long it takes to detect being put to sleep,
 			// see `await_start`'s use below.
 			let mut await_start = None;