Generate @removed DEX API signatures

CL I8fe27e8c03334f9c90204db1e69447de65a06a38 adds support to generate
a list of all @removed DEX API signatures. Amend the public API build
rule to produce this file.

Bug: 78182899
Test: make
Change-Id: Iba8869ce6e4f401a8e420ad83ab459d25bbbaae0
1 file changed