D2640: cbor: remove tests files and fix core's test-check*

[durin42 (Augie Fackler)]

durin42 added inline comments.

INLINE COMMENTS

> __init__.py:1
> -#!python
> -

These #! lines shouldn't hurt anyone - we should fix the test to exclude the thirdparty directory.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D2640

To: pulkit, #hg-reviewers
Cc: durin42, mercurial-devel