[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

yolort/models/box_head.py

@@ -22,9 +22,7 @@ def __init__(self, in_channels: List[int], num_anchors: int, strides: List[int],
         self.num_outputs = num_classes + 5  # number of outputs per anchor
         self.strides = strides
 
-        head = nn.ModuleList(
-            nn.Conv2d(ch, self.num_outputs * self.num_anchors, 1) for ch in in_channels
-        )
+        head = nn.ModuleList(nn.Conv2d(ch, self.num_outputs * self.num_anchors, 1) for ch in in_channels)
 
         # Initialize biases into head
         for mi, s in zip(head, self.strides):