[pt2][inductor] fix LoweringException: TypeError: '<' not supported between instances of 'ExternKernelCaller' and 'ExternKernelCaller' (#105469)
Summary: `sort_keys=True` for autotuning results fails because we can't compare ExternKernelCaller objects. besides, it isn't really necessary to sort the keys, either for the autotuning results or the sysinfo. let's just drop sorting all together
Test Plan: sandcastle + CI
Reviewed By: aaronenyeshi
Differential Revision: D47544587
Pull Request resolved: https://github.com/pytorch/pytorch/pull/105469
Approved by: https://github.com/jansel
