[hbase-connectors] clean up site target

[INFO] Generating "Dependencies" report --- maven-project-info-reports-plugin:2.9:dependencies
[WARNING] Artifact jdk.tools:jdk.tools:jar:1.8 has no file and won't be listed in dependency files details.
[WARNING] The repository url 'http://repository.codehaus.org' is invalid - Repository 'codehaus' will be blacklisted.
[WARNING] The repository url 'file:${project.basedir}/src/site/resources/repo' is invalid - Repository 'project.local' will be blacklisted.
[WARNING] The repository url 'https://nexus.codehaus.org/content/repositories/snapshots/' is invalid - Repository 'codehaus-nexus-snapshots' will be blacklisted.
[WARNING] The repository url 'http://repository.springsource.com/maven/bundles/external' is invalid - Repository 'spring-external' will be blacklisted.
[WARNING] The repository url 'http://snapshots.repository.codehaus.org' is invalid - Repository 'codehaus.org' will be blacklisted.
[ERROR] Unable to determine if resource antlr:antlr:jar:2.7.7:test exists in http://maven.glassfish.org/content/groups/glassfish
[ERROR] Unable to determine if resource antlr:antlr:jar:2.7.7:test exists in http://download.java.net/maven/glassfish
[ERROR] Unable to determine if resource antlr:antlr:jar:2.7.7:test exists in http://download.java.net/maven/2