[PPML] Delete test-scope in scala/ppml/pom.xml (#3838)
[PPML] Delete test-scope in scala/ppml/pom.xml (#3838)

* Delete test-scope in scala/ppml/pom.xml
intel-analytics/BigDL,intel-analytics/BigDL,yangw1234/BigDL,yangw1234/BigDL,intel-analytics/BigDL,yangw1234/BigDL,intel-analytics/BigDL,yangw1234/BigDL