Remove unnecessary dependency
diff --git a/addon/buildr/spotbugs.rb b/addon/buildr/spotbugs.rb
index 31f2e5d..d4dda82 100644
--- a/addon/buildr/spotbugs.rb
+++ b/addon/buildr/spotbugs.rb
@@ -39,7 +39,6 @@
           org.ow2.asm:asm-commons:jar:7.1
           org.ow2.asm:asm-tree:jar:7.1
           org.ow2.asm:asm-util:jar:7.1
-          org.ow2.asm:asm-xml:jar:7.1
         )
       end