Revert "Handle potentially null strings passed as ProtoLog parameter"

Revert submission 28147757-no-processing-protolog

Reason for revert: b/351458758

Reverted changes: /q/submissionid:28147757-no-processing-protolog
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:3a3403a68868541f7759f328651177c370c1a63f)
Merged-In: Id57d46e0521064b61af5cb081d214568a548f33e
Change-Id: Id57d46e0521064b61af5cb081d214568a548f33e
2 files changed