Remove the specialization code for matrix-vector multiplication in the batch MatMul Op kernel. This is not needed now that Eigen matrix-vector MatMul improvements are upstreamed. Eigen PR: > https://bitbucket.org/eigen/eigen/pull-requests/578/speed-up-eigen-matrix-vector-and-vector/diff
Remove the specialization code for matrix-vector multiplication in the batch MatMul Op kernel. This is not needed now that Eigen matrix-vector MatMul improvements are upstreamed.
Eigen PR:
> https://bitbucket.org/eigen/eigen/pull-requests/578/speed-up-eigen-matrix-vector-and-vector/diff

This is a followup to comments by Rasmus Larsen (rmlarsen@google.com) in a previous change.

PiperOrigin-RevId: 239034072

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