Remove ThirdPartyProject.prop.

These are dead. I cleaned up external/ a long time ago, but didn't
realize there were any in the main tree.

Change-Id: I5f35b2da132558e2763164285eb38629cd68ffda
diff --git a/ThirdPartyProject.prop b/ThirdPartyProject.prop
deleted file mode 100644
index 22c18cb..0000000
--- a/ThirdPartyProject.prop
+++ /dev/null
@@ -1,10 +0,0 @@
-# Copyright 2010 Google Inc. All Rights Reserved.
-#Fri Jul 16 10:03:08 PDT 2010
-currentVersion=Unknown
-version=Unknown
-isNative=true
-feedurl=http\://www.openbsd.org/security.html
-name=openbsd
-keywords=openbsd
-onDevice=true
-homepage=http\://openbsd.org