Ignore some internal warnings from SQLite error log
Ignore some internal warnings from SQLite error log

Some of the things it warns about are errors that are recovered from
internally (like schema changes), or are expected errors that happen in
normal use (UNIQUE constraint failures). If we log these via Warn(),
it triggers a unit test failure.

couchbase/couchbase-lite-ios,couchbase/couchbase-lite-ios,couchbase/couchbase-lite-ios,couchbase/couchbase-lite-ios,amco/couchbase-lite-ios,amco/couchbase-lite-ios,couchbase/couchbase-lite-ios,amco/couchbase-lite-ios,amco/couchbase-lite-ios,amco/couchbase-lite-ios,amco/couchbase-lite-ios,couchbase/couchbase-lite-ios,amco/couchbase-lite-ios