refactor: Remove perf_counter based elapsed time calculation for ping duration.

Author: KingPin

pingpanda_core/checks.py

@@ -149,14 +149,13 @@ async def _check_ip(self, ip: str) -> None:
             return
 
         success = False
-        start_time = time.perf_counter()
+        success = False
 
         for attempt in range(app.retry_count):
             try:
                 # aioping returns delay in seconds
                 delay = await aioping.ping(ip, timeout=2)
 
-                elapsed = time.perf_counter() - start_time
                 duration_ms = delay * 1000
 
                 if app._should_log_result(True):