tree de3c4006fde7ce47c1a7645d204dc9086cd6520e
parent 7cfee72027548609905c0e44e5622d72e6e7beff
author waltl <waltl@google.com> 1611735027 -0800
committer Copybara-Service <copybara-worker@google.com> 1611735097 -0800

Clean up some code in register module map action

This is an NFC.  Get rid of a NestedSet that gets immediately
flattened, and remove some resulting dead APIs.

PiperOrigin-RevId: 354036229