Remove unused dependencies (akka, eclipse collections) from nd4j-api (#2198)
Remove unused dependencies (akka, eclipse collections) from nd4j-api (#2198)


deeplearning4j/nd4j,smarthi/nd4j,gagatust/nd4j,ambraspace/nd4j,deeplearning4j/nd4j,smarthi/nd4j,ambraspace/nd4j,gagatust/nd4j