build: require sqlite when building the wallet

Require that sqlite is available in order to compile the wallet. Removes
instances of USE_SQLITE since it is no longer possible to not have
sqlite available.

The NO_SQLITE option is dropped from depends.

Co-authored-by: Ava Chow <github@achow101.com>
Co-authored-by: Hennadii Stepanov <32963518+hebasto@users.noreply.github.com>

test/functional/wallet_rescan_unconfirmed.py

@@ -24,7 +24,6 @@ class WalletRescanUnconfirmed(BitcoinTestFramework):
 
     def skip_test_if_missing_module(self):
         self.skip_if_no_wallet()
-        self.skip_if_no_sqlite()
 
     def run_test(self):
         self.log.info("Create wallets and mine initial chain")