This PR is related to #15016 issue.
OdbcHook returns None for non-boolean-like string values in connect_kwargs dict arg, however connect_kwarg values should remain as is in this case.

According to the discussion on #15016, we agreed to remove the clean_bool function, as it is not needed actually for processing boolean values in JSON .

Removed quotas for the boolean values accroding to the discussion on #15016 issue.

Fixed the failing pydocstyle test: No blank lines allowed after function docstring (found 1)

Fixed failing pylint check. R1721: Unnecessary use of a comprehension

Integration Test has been changed as it should all work correctly with unquoted raw JSON booleans, which should make clean_bool unnecessary.

Fixed input parameter {'ansi': true} -> {'ansi': True}