Accounts are not being removed when searching

[elias-garcia]

Steps to reproduce (Mainnet):

1. Search for Hermez address: hez:0x9f9DabBc264E823DC8f69b8e7e7e3f6237C92462.
2. You'll see 2 token accounts for that address.
3. Search for Hermez address: hez:0x1c124AF109DB232B0ce1f1A1d130e5331fDA518e.
4. Now you'll see the previous token accounts for the previous searched address + 1 token account for the current searched address.

It looks like we are not cleaning the state properly.