Improve MAVEN build Performance

[ChenZhangg]

Apache Maven Dependency Plugin can be used to find unused dependencies. And I found following list. Maybe we can remove them.
jacoco
{groupId='org.hamcrest', artifactId='hamcrest-core'}
{groupId='org.jenkins-ci.plugins', artifactId='structs'}
{groupId='org.jenkins-ci.main', artifactId='jenkins-war'}
{groupId='com.github.spotbugs', artifactId='spotbugs-annotations'}
{groupId='net.jcip', artifactId='jcip-annotations'}
{groupId='org.codehaus.mojo', artifactId='animal-sniffer-annotations'}
{groupId='commons-logging', artifactId='commons-logging'}
{groupId='org.jenkins-ci', artifactId='test-annotations'}

According to Maven parallel test, we can run tests in parallel.

=====================
If there are any inappropriate modifications in this PR, please give me a reply and I will change them.

[centic9]

Thanks for the suggested changes!

It seems some checks fail because of the "parallel" option, maybe we can keep this out of the PR for now to only remove the third-party libraries first so you can then take a closer look why building in parallel is failing.

[ChenZhangg]

OK Let me have a try

[centic9]

This looks good now, thanks for the PR!