Remove usage of bot_utils.GetDeviceAffinity in perf_data_generator

tools/perf/core/perf_data_generator_unittest.py

Index: tools/perf/core/perf_data_generator_unittest.py
diff --git a/tools/perf/core/perf_data_generator_unittest.py b/tools/perf/core/perf_data_generator_unittest.py
index 99cc96d51f5e88483351c1901fe4249f746948e4..7bc8e0b38dd988734b86ee2cc0c50768d314e843 100644
--- a/tools/perf/core/perf_data_generator_unittest.py
+++ b/tools/perf/core/perf_data_generator_unittest.py
@@ -134,9 +134,10 @@ class PerfDataGeneratorTest(unittest.TestCase):
         'platform': 'android',
         'swarming_dimensions': swarming_dimensions,
     }
+    sharding_map = {'1': {'blacklisted': 0, 'not_blacklisted': 0}}
     benchmarks = [BlacklistedBenchmark, NotBlacklistedBenchmark]
     tests = perf_data_generator.generate_telemetry_tests(
-        test_config, benchmarks, None, ['blacklisted'])
+        test_config, benchmarks, sharding_map, ['blacklisted'])
 
     generated_test_names = set(t['name'] for t in tests)
     self.assertEquals(