Disable "no context for char" log spam.

It looks like Id8c91ae0be6cad8a7ef77a0cd5803676290986c1 upgraded this
message from an actual error notification into a full-fledged adb log
spammer. Oops! This CL moves it back to the location it should be at,
and requires SK_DEBUG to see it even there.

Bug: 7038312
Change-Id: Iefc0b001a9874e0f177507d43231e6fdb4a1d92a
1 file changed