feat: remove legacy API directories and dependencies (#241)

* feat: remove legacy API directories and dependencies

🗑️ Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

* fix: remove unused functions and commented code

- Remove unused _get_subclasses() and _get_all_inheritors() functions from __init__.py
- Remove commented out SolanaApi assertion from test_enumerate_classes.py

* fix: apply black formatting

---------

Co-authored-by: Simon Sefcik <sim@Simons-Mac-mini.local>
Co-authored-by: Claude <noreply@anthropic.com>

Author: 3 people

blockapi/__init__.py

@@ -3,7 +3,6 @@
 
 import coinaddrng
 
-import blockapi.api
 import blockapi.utils
 
 from .services import APIError
@@ -111,30 +110,6 @@ def _inheritors(klass):
     return subclasses
 
 
-def _get_subclasses(class_name):
-    return [getattr(class_name, x) for x in dir(class_name) if not x.startswith('__')]
-
-
-def _get_all_inheritors():
-    all_inheritors = []
-
-    tridy = _get_subclasses(blockapi.api)
-
-    for trida in tridy:
-        tridy_sub = _get_subclasses(trida)
-        for trida_sub in tridy_sub:
-            if (
-                inspect.isclass(trida_sub)
-                and blockapi.services.BlockchainAPI in trida_sub.__bases__
-            ):
-                all_inheritors.append(trida_sub)
-                grandchildren = _inheritors(trida_sub)
-                if len(grandchildren) > 0:
-                    all_inheritors += _inheritors(trida_sub)
-
-    return all_inheritors
-
-
 def get_working_apis_for_coin(symbol, debug=False):
     coin_classes = get_api_classes_for_coin(symbol)