Revert "Merge pull request #3 from NessComputing/attach-agent"

This feature caused more build problems due to the tools.jar dependency than it brought in benefits.

This reverts commit 5b1d1d52316d88c262bfe5fc4ad722264a6ff177, reversing
changes made to b6acd5245279d2478aa55be1b2d3bf629fed90f6.

Conflicts:
	pom.xml
	src/main/java/com/nesscomputing/jmx/agent/AgentAttach.java
	src/main/java/com/nesscomputing/jmx/agent/AgentAttachConfig.java
	src/main/java/com/nesscomputing/jmx/agent/JmxAgentAttachModule.java
In tests that don't start JMX, avoid doing exports
Ensure MBeanModule always gets installed.
Move to 1.3.0-SNAPSHOT since we removed an internal feature
[maven-release-plugin] prepare release ness-jmx-1.3.0