HIVE-26205: Incorrect scope for slf4j-api dependency in kafka-handler (Wechar Yu...

HIVE-26205: Incorrect scope for slf4j-api dependency in kafka-handler (Wechar Yu, reviewed by Stamatis Zampetakis)

The classes in the kafka-handler module are using the slf4j-api thus
this dependency must be set at compile scope. Currently it is set at
test scope which makes the build fail in some recent maven versions (
e.g., 3.8.5).

The parent pom declares explicitly slf4j-api at compile scope so
removing all the references from kafka-handler/pom.xml is the way to
go.

Closes #3272