some fix in flops_profiler (#2068)
* bugs in profiler:
1. Tensor.bmm missed in _patch_tensor_methods function
2. missed funtions in _reload_functionals and _reload_tensor_methods functions
3. torch.mm and torch.Tensor.mm will have same __name__ in wrapFunc, my suggustion is use __str__ instead.
* formatting
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Co-authored-by: Olatunji Ruwase <olruwase@microsoft.com>
Co-authored-by: Cheng Li <pistasable@gmail.com>