更新npu_901a和npu_910b文件的代码，解决布尔值的问题 (#2302)

Author: BQBBLZ

mindtorch/_apis/npu_910a.py

@@ -459,8 +459,6 @@ def sum(input, dim, keepdim, dtype):
         Tensor: The tensor with summed elements.
     """
     if ENABLE_PYBOOST:
-        if dtype is None:
-            dtype = input.dtype
         return pyboost.sum_ext_op(input, dim, keepdim, dtype)
     return legacy.reduce_sum(input.astype(dtype), dim, keepdim)
 
@@ -2581,4 +2579,4 @@ def ifftn(input, s, dim, norm):
     return pyboost.ifftn_op(input, s, dim, norm)
 
 def fftn(input, s, dim, norm):
-    return pyboost.fftn_op(input, s, dim, norm)
+    return pyboost.fftn_op(input, s, dim, norm)

mindtorch/_apis/npu_910b.py

@@ -461,8 +461,6 @@ def sum(input, dim, keepdim, dtype):
         Tensor: The tensor with summed elements.
     """
     if ENABLE_PYBOOST:
-        if dtype is None:
-            dtype = input.dtype
         return pyboost.sum_ext_op(input, dim, keepdim, dtype)
     return legacy.reduce_sum(input.astype(dtype), dim, keepdim)
 
@@ -2524,4 +2522,4 @@ def ifftn(input, s, dim, norm):
     return pyboost.ifftn_op(input, s, dim, norm)
 
 def fftn(input, s, dim, norm):
-    return pyboost.fftn_op(input, s, dim, norm)
+    return pyboost.fftn_op(input, s, dim, norm)