Revert "merge from master"

This reverts commit df199cd2a01bc234c73561a41313cf6ff4ede5c0.
Removed pmd-jedit. JEdit's PMD Plugin has moved into an own repository at jedit.sf.net.
See http://jedit.git.sourceforge.net/git/gitweb.cgi?p=jedit/PMDPlugin;a=summary
pmd: fixed #1060 GodClassRule >>> wrong method
pmd: fixed bug #1012 False positive: Useless parentheses.
pmd: fixed #1059 Change rule name "Use Singleton" should be "Use Utility class"
pmd: verify #1058 False positive for VariableNamingConventions