fix segmenter ncnn inference failure brought by open-mmlab#477

mmdeploy/pytorch/functions/linear.py

@@ -25,7 +25,7 @@ def linear__ncnn(
 
  dim = input.dim()
 
- if dim == 2 or dim == 3 and input.shape[0] == 1:
+ if dim == 2:
  return origin_func(input, weight, bias)
  else:
  out = origin_func(input, weight)