Don't invoke mode as overloaded argument in torch dispatch (#80992)
I noticed that in some situations torch dispatch modes were being
invoked with a mode active, which isn't supposed to happen (we
disable modes before calling into the user mode.) I also noticed that
I was getting a warning that I had a deprecated non-static definition of
torch dispatch on an argument even though there wasn't any.
It turns out this is because modes were part of the overloaded arguments
list in the Python fallback kernel for torch dispatch. This is wrong;
instead we should rely on the actual dispatching function to consult
modes. This makes the code simpler.
Signed-off-by: Edward Z. Yang <ezyang@fb.com>
Pull Request resolved: https://github.com/pytorch/pytorch/pull/80992
Approved by: https://github.com/zou3519
