Clean up unused imports (#5099)

Summary:
Pull Request resolved: #5099

X-link: https://github.com/facebookresearch/FBGEMM/pull/2106

as title

Reviewed By: qandrew

Differential Revision: D85837870

fbshipit-source-id: 6a8f72663999369ebcd924f9d0e1d75243c37c09

Author: Aya-ZIbra

fbgemm_gpu/experimental/gen_ai/test/attention/blackwell_fmha_test.py

@@ -15,18 +15,11 @@
 from fbgemm_gpu.experimental.gen_ai.attention.cutlass_blackwell_fmha import (
     cutlass_blackwell_fmha_func,
 )
-from hypothesis import HealthCheck, Verbosity
 from parameterized import parameterized
 
 from .attention_ref_fp8 import attention_ref_fp8
 from .test_utils import attention_ref, generate_qkv, generate_random_padding_mask
 
-common_settings = {
-    "verbosity": Verbosity.normal,
-    "max_examples": 200,
-    "deadline": None,
-    "suppress_health_check": [HealthCheck.filter_too_much, HealthCheck.data_too_large],
-}
 
 DEBUG = False
 SEED = 2