[BE][EZ][Metal] Do not pass tensor length as arg

[malfet]

Stack from ghstack (oldest at bottom):

• [BE][MPS]Reduce number BitwiseOps parameters to 1 #146547
• -> [BE][EZ][Metal] Do not pass tensor length as arg #146522

As all devices capable of running Metal-2 support nonuniform threadgroup sizes, see https://developer.apple.com/metal/Metal-Feature-Set-Tables.pdf for more detail

[pytorch-bot]

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[malfet]

@pytorchbot merge -f "Lint + MPS are green"

[pytorchmergebot]

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