Revert "Fix StringStore after symbols changes"
Revert "Fix StringStore after symbols changes"

This reverts commit bcfe3bd3122a61147d31425566060da90e997115.

explosion/spaCy,spacy-io/spaCy,explosion/spaCy,explosion/spaCy,honnibal/spaCy,spacy-io/spaCy,spacy-io/spaCy,explosion/spaCy,honnibal/spaCy,spacy-io/spaCy,honnibal/spaCy,explosion/spaCy,explosion/spaCy,spacy-io/spaCy,honnibal/spaCy,spacy-io/spaCy