Remove vsx suffix in sleef calls (#100149)
Sleef has automatic architecture selection for Power. There is no need to call architecture specific interfaces. If we call the generic interface, Sleef will correctly choose the architecture specific code, based on the architecure (vsx for Power8, vsx3 for Power9 and Power10). So, the vsx suffix in Sleef calls in PyTorch are removed, so that the architecture specific code selection is handled by Sleef internally.
Fixes the issue wherein older (and slower) vsx code in Sleef was getting executed on newer Power9 and Power10 processors.
Pull Request resolved: https://github.com/pytorch/pytorch/pull/100149
Approved by: https://github.com/jgong5
