Apply suggestions from code review

Co-authored-by: Matt Graham <matthew.m.graham@gmail.com>

src/tlo/methods/healthsystem.py

@@ -2234,7 +2234,7 @@ def _get_events_due_today(self,) -> Tuple[List, List]:
                      )
 
             elif event.target not in alive_persons:
-                # if individual level event and the person who is the target is no longer alive, do nothing more,
+                # if the person who is the target is no longer alive, do nothing more,
                 # i.e. remove from heapq
                 pass
 
@@ -2327,7 +2327,7 @@ def process_events_mode_2(self, hold_over: List[HSIEventQueueItem]) -> None:
                          )
 
                 elif event.target not in alive_persons:
-                    # if individual level event and the person who is the target is no longer alive,
+                    # if the person who is the target is no longer alive,
                     # do nothing more, i.e. remove from heapq
                     pass
 
@@ -2501,7 +2501,7 @@ def process_events_mode_2(self, hold_over: List[HSIEventQueueItem]) -> None:
                      )
 
             elif event.target not in alive_persons:
-                # if individual level event and the person who is the target is no longer alive,
+                # if the person who is the target is no longer alive,
                 # do nothing more, i.e. remove from heapq
                 pass