Remove unused coinselection (#597) #855

Job	Run time
checks / format	22s
checks / mypy	46s
checks / ruff	6s
regtest (3.10, 1.7.1, CLNRestWallet, postgres://cashu:cashu@localhost:5432/cashu) / regtest	5m 5s
regtest (3.10, 1.7.1, CLNRestWallet, ./test_data/test_mint) / regtest	4m 50s
regtest (3.10, 1.7.1, CoreLightningRestWallet, postgres://cashu:cashu@localhost:5432/cashu) / regtest	4m 59s
regtest (3.10, 1.7.1, LNbitsWallet, postgres://cashu:cashu@localhost:5432/cashu) / regtest	4m 44s
regtest (3.10, 1.7.1, CoreLightningRestWallet, ./test_data/test_mint) / regtest	4m 50s
regtest (3.10, 1.7.1, LNbitsWallet, ./test_data/test_mint) / regtest	4m 35s
regtest (3.10, 1.7.1, LndRestWallet, postgres://cashu:cashu@localhost:5432/cashu) / regtest	4m 55s
regtest (3.10, 1.7.1, LndRestWallet, ./test_data/test_mint) / regtest	4m 32s
tests (ubuntu-latest, 3.10, 1.7.1, false, postgres://cashu:cashu@localhost:5432/cashu, FakeWallet) / Run (db postgres://cashu:cashu@localhost:5432/cashu, deprecated api false)	3m 58s
tests (ubuntu-latest, 3.10, 1.7.1, true, ./test_data/test_mint, FakeWallet) / Run (db ./test_data/test_mint, deprecated api true)	3m 43s
tests (ubuntu-latest, 3.10, 1.7.1, true, postgres://cashu:cashu@localhost:5432/cashu, FakeWallet) / Run (db postgres://cashu:cashu@localhost:5432/cashu, deprecated api true)	3m 56s
tests (ubuntu-latest, 3.10, 1.7.1, false, ./test_data/test_mint, FakeWallet) / Run (db ./test_data/test_mint, deprecated api false)	3m 43s
	55m 4s

Provide feedback