Revert "Reland 2 of Merge more symbolic meta kernels and symint changes from branch (#86334) (#86488)"
This reverts commit 978b46d7c96627e3b3553ad70ad21cb161d05f90.
Reverted https://github.com/pytorch/pytorch/pull/86488 on behalf of https://github.com/osalpekar due to Broke executorch builds internally with the following message: RuntimeError: Missing out variant for functional op: aten::split.Tensor(Tensor(a -> *) self, SymInt split_size, int dim=0) -> Tensor(a)[] . Make sure you have loaded your custom_ops_generated_lib
