Removing duplicate packages. Archives not the same, but contents 100% the same.

* "TrueCrypt Setup 3.1.zip" (actually 3.1a) duplicate of "truecrypt-3.1a.zip"
* "TrueCrypt Setup 4.0.zip" duplicate of "truecrypt-4.0.zip".
* "TrueCrypt Setup 4.1.zip" duplicate of "truecrypt-4.1.zip".