calabash/calabash-android — pull request #160 by bootstraponline (2012-12-07 20:54:23+00:00)
Title: Add delete documentation

Delete is static to make it clear instance vars are not used.
Only call listFiles once for performance reasons and code readability.

Based on comments from https://github.com/calabash/calabash-android/commit/cfa37f52e9d7e0adae18df05c7aab5d30af7856a#commitcomment-2273613