Disable checkstyle pmd and checkstyle in the root project in eclipse

Disable this checks, becaus the main project has no implmentaions.
Further the execution of the checks yield to errors in eclipse.

.settings/qa.eclipse.plugin.checkstyle.prefs

 configFilePath=config/checkstyle.xml
 customModulesJarPaths=
 eclipse.preferences.version=1
-enabled=true
+enabled=false

.settings/qa.eclipse.plugin.pmd.prefs

 customRulesJars=
 eclipse.preferences.version=1
-enabled=true
+enabled=false
 ruleSetFilePath=config/pmd.xml