Update for SymInt API changes (#4882)
* Update for SymInt API changes
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
* lintfix
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
* testfix
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
* Delete .torch_pin
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Signed-off-by: Edward Z. Yang <ezyang@fb.com>
