Cleaning up comment removal and version replacement

jsonmodify is now responsible for striping the comments and replacing the placeholder  version with the defaule one. Cleaning up the old code.

Test: presubmit
Bug: 231691643
Change-Id: I66f1cec86adafa10be90a739f02b8421dd480ae8
(cherry picked from commit da829ae3c7bb7e32c6ebb25499533e47e6522ef9)
Merged-In: I66f1cec86adafa10be90a739f02b8421dd480ae8
6 files changed