Rollback the CRLF format change as this py file has executable attribute set.
On BSD’ish Unix systems, Python scripts can be made directly executable, like shell scripts (...) On some platforms, this first line must end with a Unix-style line ending ('\n'), not a Windows ('\r\n') line ending.

Signed-off-by: Tian, Hot <hot.tian@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2-buildtools/code/trunk/BaseTools@2649 c2973edb-eda0-4c78-bc6a-9341b269661f