Skip forbidden API check when running examples

Motivation:

We should skip the forbidden API check when run the examples as otherwise it may fail.

Modifications:

Skip the API check in run-example.sh

Result:

Be able to run the examples in all cases.

run-example.sh

@@ -111,4 +111,4 @@ done
 
 cd "`dirname "$0"`"/example
 echo "[INFO] Running: $EXAMPLE ($EXAMPLE_CLASS $EXAMPLE_ARGS)"
-exec mvn -q -nsu compile exec:exec -Dcheckstyle.skip=true -Dforcenpn="$FORCE_NPN" -DargLine.example="$EXAMPLE_ARGS" -DexampleClass="$EXAMPLE_CLASS"
+exec mvn -q -nsu compile exec:exec -Dcheckstyle.skip=true -Dforbiddenapis.skip=true -Dforcenpn="$FORCE_NPN" -DargLine.example="$EXAMPLE_ARGS" -DexampleClass="$EXAMPLE_CLASS"