Replace AutoNonVariableTypeMode with InferenceMode in static runtime.
Test Plan:
https://www.internalfb.com/intern/aibench/details/3752129704
https://www.internalfb.com/intern/aibench/details/1306815519
Reviewed By: hlu1
Differential Revision: D27691509
fbshipit-source-id: d43db028a399bb02166a539577f6922237145f83
