[sql generation] fti_need_distinct quere was not anymore used, potentially causing duplicates on has_text queries with sqlite backend

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\.svn

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^build$

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^dist$

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\.pyc$

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\.pyo$

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\.bak$

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\.old$

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\~$

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\#.*?\#$

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\.swp$

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^doc/book/en/apidoc$