Remove invalid return values in setup methods [a-h] (#63362)

Co-authored-by: epenet <epenet@users.noreply.github.com>

homeassistant/components/blockchain/sensor.py

@@ -1,4 +1,6 @@
 """Support for Blockchain.com sensors."""
+from __future__ import annotations
+
 from datetime import timedelta
 import logging
 
@@ -7,7 +9,10 @@ import voluptuous as vol
 
 from homeassistant.components.sensor import PLATFORM_SCHEMA, SensorEntity
 from homeassistant.const import ATTR_ATTRIBUTION, CONF_NAME
+from homeassistant.core import HomeAssistant
 import homeassistant.helpers.config_validation as cv
+from homeassistant.helpers.entity_platform import AddEntitiesCallback
+from homeassistant.helpers.typing import ConfigType, DiscoveryInfoType
 
 _LOGGER = logging.getLogger(__name__)
 
@@ -29,7 +34,12 @@ PLATFORM_SCHEMA = PLATFORM_SCHEMA.extend(
 )
 
 
-def setup_platform(hass, config, add_entities, discovery_info=None):
+def setup_platform(
+    hass: HomeAssistant,
+    config: ConfigType,
+    add_entities: AddEntitiesCallback,
+    discovery_info: DiscoveryInfoType | None = None,
+) -> None:
     """Set up the Blockchain.com sensors."""
 
     addresses = config[CONF_ADDRESSES]
@@ -38,7 +48,7 @@ def setup_platform(hass, config, add_entities, discovery_info=None):
     for address in addresses:
         if not validate_address(address):
             _LOGGER.error("Bitcoin address is not valid: %s", address)
-            return False
+            return
 
     add_entities([BlockchainSensor(name, addresses)], True)