Found a file that was used in testing and not part of the current string functions.

git-svn-id: https://svn.apache.org/repos/asf/incubator/vxquery/branches/vxquery_algebricks@1363560 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/strings/AbstractStringTranscodingFunction.java b/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/strings/AbstractStringTranscodingFunction.java
deleted file mode 100644
index e69de29..0000000
--- a/vxquery-core/src/main/java/org/apache/vxquery/runtime/functions/strings/AbstractStringTranscodingFunction.java
+++ /dev/null