turn off hypothesis deadlines, enforced by default in 4.0 (#4696)

we don't care about exceeding a deadline in CI because our infra
has wild variability and this can just randomly happen.
diff --git a/tests/hypothesis/test_fernet.py b/tests/hypothesis/test_fernet.py
index 53e7c54..75195f5 100644
--- a/tests/hypothesis/test_fernet.py
+++ b/tests/hypothesis/test_fernet.py
@@ -8,7 +8,7 @@
 from cryptography.fernet import Fernet
 
 
-@settings(suppress_health_check=[HealthCheck.too_slow])
+@settings(suppress_health_check=[HealthCheck.too_slow], deadline=None)
 @given(binary())
 def test_fernet(data):
     f = Fernet(Fernet.generate_key())
diff --git a/tests/hypothesis/test_padding.py b/tests/hypothesis/test_padding.py
index fa06bb7..74a58eb 100644
--- a/tests/hypothesis/test_padding.py
+++ b/tests/hypothesis/test_padding.py
@@ -8,7 +8,7 @@
 from cryptography.hazmat.primitives.padding import ANSIX923, PKCS7
 
 
-@settings(suppress_health_check=[HealthCheck.too_slow])
+@settings(suppress_health_check=[HealthCheck.too_slow], deadline=None)
 @given(integers(min_value=1, max_value=255), binary())
 def test_pkcs7(block_size, data):
     # Generate in [1, 31] so we can easily get block_size in bits by