Change the log level from error to warning when OTA database is not available to prevent log spam am: 6f7b2430 am: 06884b4d am: 16fc0ec9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/opt/telephony/+/15288306

Change-Id: I4b94a7f13c48946b18cb7d4f640aab1e65b53320