Revert "FW query timing test: mock get_data function for timeout" (#30696)

Revert "FW query timing test: mock get_data function for timeout (#29712)"

This reverts commit 3014e27e57cf3a281eac656391615299ba981958.
old-commit-hash: b1ecfd55ce

selfdrive/car/tests/test_fw_fingerprint.py

@@ -5,7 +5,6 @@ import time
 import unittest
 from collections import defaultdict
 from parameterized import parameterized
-from unittest import mock
 import threading
 
 from cereal import car
@@ -177,7 +176,7 @@ class TestFwFingerprint(unittest.TestCase):
 
 class TestFwFingerprintTiming(unittest.TestCase):
   N: int = 5
-  TOL: float = 0.1
+  TOL: float = 0.12
 
   @staticmethod
   def _run_thread(thread: threading.Thread) -> float:
@@ -192,19 +191,12 @@ class TestFwFingerprintTiming(unittest.TestCase):
     return time.perf_counter() - t
 
   def _benchmark_brand(self, brand, num_pandas):
-    def fake_get_data(_, timeout):
-      nonlocal fake_timeout_time
-      fake_timeout_time += timeout
-      return {}
-
-    with mock.patch("openpilot.selfdrive.car.isotp_parallel_query.IsoTpParallelQuery.get_data", fake_get_data):
     fake_socket = FakeSocket()
     brand_time = 0
     for _ in range(self.N):
-        fake_timeout_time = 0
       thread = threading.Thread(target=get_fw_versions, args=(fake_socket, fake_socket, brand),
                                 kwargs=dict(num_pandas=num_pandas))
-        brand_time += self._run_thread(thread) + fake_timeout_time
+      brand_time += self._run_thread(thread)
 
     return brand_time / self.N
 
@@ -235,7 +227,7 @@ class TestFwFingerprintTiming(unittest.TestCase):
 
   @pytest.mark.timeout(60)
   def test_fw_query_timing(self):
-    total_ref_time = 6.58
+    total_ref_time = 6.41
     brand_ref_times = {
       1: {
         'body': 0.11,