remove obsolete modules

Author: mkristian

pom.xml

@@ -147,13 +147,9 @@
     <module>jruby-maven-plugin</module>
     <module>gem-maven-plugin</module>
     <module>rspec-maven-plugin</module>
-    <module>cucumber-maven-plugin</module>
-    <module>gem-assembly-descriptors</module>
     <module>ruby-tools</module>
-    <module>rake-maven-plugin</module>
     <module>runit-maven-plugin</module>
     <module>minitest-maven-plugin</module>
-    <module>bundler-maven-plugin</module>
     <module>gem-extension</module>
     <module>gem-with-jar-extension</module>
   </modules>