Netflix's so-called Summer of Love was a big hit last year, but arguably the biggest breakout success of all was the charming rom-com To All the Boys I've Loved Before. No surprise then that Netflix is already putting together a sequel, but THR reports that the follow-up film is going to be missing a key element from the first film -- director Susan Johnson. The To All the Boys I've Loved Before sequel is recruiting Michael Fimognari, who was the cinematographer on the first film, to direct the sequel. To All the Boys screenwriter Sofia …