Remove unused imports and an unreachable statement (#103)

- coordinator/data_processor.py: drop unused 'import re'.
- api/parsers/nordpool_parser.py: drop unused 'timezone' from the datetime
  import (the parser only uses the 'timezone' name as a parameter/dict key).
- sensor/price.py: remove an unreachable 'return' after a try/except whose both
  branches already return (audit finding #31).

Pure cleanup; clears the two remaining pylint unused-import warnings. Full unit
suite (451) passes.

Author: enoch85

custom_components/ge_spot/api/parsers/nordpool_parser.py

@@ -1,7 +1,7 @@
 """Parser for Nordpool API responses."""
 
 import logging
-from datetime import datetime, timezone
+from datetime import datetime
 from typing import Dict, Any
 
 from ..base.price_parser import BasePriceParser

custom_components/ge_spot/coordinator/data_processor.py

@@ -2,7 +2,6 @@
 
 import logging
 import math
-import re
 from datetime import datetime, timedelta
 from typing import Any, Dict, Optional
 

custom_components/ge_spot/sensor/price.py

@@ -136,7 +136,6 @@ def get_timestamp(data):
                     return {"timestamp": formatted_time, "value": price_value}
                 except (ValueError, TypeError):
                     return {"timestamp": timestamp, "value": price_value}
-                return {"timestamp": timestamp, "value": price_value}
             return {}
 
         # Initialize parent class