btsocket: Replace the shebang of setup.py with py3

Replace the shebang of setup.py with py3 to avoid the warning.

BUG=b:219620510
TEST=None

Change-Id: Icad31257b2815fc6f424fe4180d72ffe2ea27a2f
1 file changed
tree: e974ca94b628ac86165c0f60744c1471d2319dd5
  1. btsocket/
  2. src/
  3. .gitignore
  4. LICENSE
  5. PRESUBMIT.cfg
  6. setup.py