remove stray test file
exfatfsck: ELF 64-bit LSB  executable, x86-64, version 1 (SYSV), dynamically linked (uses shared libs), for GNU/Linux 2.6.24, BuildID[sha1]=c91c3e4c1e542e4a40bcad47ac747f62fb7312f9, not stripped

Change-Id: I32472d460a8f03776e1d215810c537b029789220