[sledge] Simplify Sh starN and orN operations
[sledge] Simplify Sh starN and orN operations

Summary: Normalization can swallow the units of star and or.

Reviewed By: bennostein

Differential Revision: D37743458

fbshipit-source-id: 234721c1ec137f4532c6f94a5b1acd28335ef45f

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