Add support for icu_tokenizer by removing some more "emoji"

[damienalexandre]

Add tests with icu_tokenizer helped discover some not well supported edge cases:

• '303D' => '〽',
• '3030' => '〰',
• '00A9' => '©',
• '00AE' => '®',
• '2122' => '™',

Those emoji are now removed. cc #26