Removed the empty Documentation directory.

Documentation will be on the wiki rather than in the source repository.

Change-Id: I82bfa6dd6eda9fcf60b85d20a1f9b24eb7ab0ec9
diff --git a/Documentation/readme b/Documentation/readme
deleted file mode 100644
index e69de29..0000000
--- a/Documentation/readme
+++ /dev/null