MAINT: remove try/except block required for old mantid/h5py pin

[MridulS]

No description provided.

[MridulS]

hah! CI complains

         if any([n > 1 for n in remaining_src_dims]):
            # All dimensions from target_shape should either have been popped
            # to match the selection shape, or be 1.
>           raise TypeError("Can't broadcast %s -> %s" % (source_shape, self.array_shape))  # array shape
E           TypeError: Can't broadcast (2, 1) -> (2,)