Remove dead code

hived/api_error_smoketest.py

hived/create_account_list.py

hived/dhf_api_plugin.py

hived/get_ops_in_block.py

hived/input_data/accounts.csv

hived/input_data/hashes.csv

hived/jsonsocket.py

hived/list_account.py

hived/reference/account_by_key_api/get_key_references.py

hived/reference/account_by_key_api/readme.md

hived/reference/account_history_api/enum_virtual_ops.py

hived/reference/account_history_api/get_account_history.py

hived/reference/account_history_api/get_ops_in_block.py

hived/reference/account_history_api/get_transaction.py

hived/reference/account_history_api/readme.md

hived/reference/condenser_api/README.md

hived/reference/condenser_api/broadcast_block.py

hived/reference/condenser_api/broadcast_transaction.py

...erence/condenser_api/broadcast_transaction_synchronous.py

hived/reference/condenser_api/find_proposals.py