Remove unused java client

java-client/LICENSE

java-client/README.md

java-client/pom.xml

.../src/main/java/rucd/monitoring/client/AbstractSensor.java

java-client/src/main/java/rucd/monitoring/client/Disk.java

java-client/src/main/java/rucd/monitoring/client/Inodes.java

java-client/src/main/java/rucd/monitoring/client/Main.java

...-client/src/main/java/rucd/monitoring/client/Monitor.java

...-client/src/main/java/rucd/monitoring/client/Network.java

java-client/src/main/java/rucd/monitoring/client/Reboot.java

java-client/src/main/java/rucd/monitoring/client/Sensor.java

java-client/src/main/java/rucd/monitoring/client/TCP.java

java-client/src/main/java/rucd/monitoring/client/UDP.java

...client/src/main/java/rucd/monitoring/client/Uploader.java