Remove expensive logging statement.

This logging statement is expensive (maybe because of stringification)
and it is on the TextClassifier API critical path. Remove it. In the
future, we can log model lookup info only when we need to reload the
model (i.e. the lookup result changes).

BUG: 225081632
Change-Id: I14f950e4101027d1a6596fd1c459c4c4440b8379
1 file changed