Update import

[wannaphong]

What does this changes

I changed import on PyThaiNLP 2.2.

What was wrong

Prevents problems of importing duplicate files that are contained in pythainlp.

Your checklist for this pull request

🚨Please review the guidelines for contributing to this repository.

• Passed code styles and structures
• Passed code linting checks and unit test

[coveralls]

Coverage remained the same at 95.466% when pulling 9532cb0 on update-import-2.2 into 590e24d on 2.2.

[pep8speaks]

Hello @wannaphong! Thanks for updating this PR. We checked the lines you've touched for PEP 8 issues, and found:

• In the file pythainlp/__init__.py:

Line 39:1: E402 module level import not at top of file
Line 40:1: E402 module level import not at top of file
Line 41:1: E402 module level import not at top of file
Line 42:1: E402 module level import not at top of file
Line 49:1: E402 module level import not at top of file
Line 50:1: E402 module level import not at top of file