get time elapsed from log files

server/db_py.py

@@ -246,43 +246,10 @@ def extract_measurement_metrics(db_file_path):
             GROUP BY COM_Dst_endpoint
             """
         ).fetchall()
-
-        elapsed_row = conn.execute(
-            """
-            WITH first_last AS (
-                SELECT
-                    (SELECT COM_time FROM MEASUREMENT ORDER BY rowid ASC LIMIT 1) AS start_time,
-                    (SELECT COM_time FROM MEASUREMENT ORDER BY rowid DESC LIMIT 1) AS end_time
-            )
-            SELECT
-                ROUND(
-                    CASE
-                        WHEN end_sec >= start_sec THEN
-                            end_sec - start_sec
-                        ELSE
-                            (end_sec - start_sec) + 86400
-                    END
-                ) AS elapsed_seconds
-            FROM (
-                SELECT
-                    (strftime('%H', start_time) * 3600 +
-                    strftime('%M', start_time) * 60 +
-                    strftime('%S', start_time)) AS start_sec,
-
-                    (strftime('%H', end_time) * 3600 +
-                    strftime('%M', end_time) * 60 +
-                    strftime('%S', end_time)) AS end_sec
-                FROM first_last
-            );
-            """
-        ).fetchone()
     finally:
         conn.close()
 
-    result = {"duration_seconds": None, "tputResults": []}
-
-    if elapsed_row and elapsed_row["elapsed_seconds"] is not None:
-        result["duration_seconds"] = int(elapsed_row["elapsed_seconds"])
+    result = {"tputResults": []}
 
     rssi_by_endpoint = {
         row["COM_Dst_endpoint"]: {