Cleanup unused variable and repeated code

Author: Michal Ploski

aws_lambda_powertools/utilities/parameters/base.py

@@ -15,7 +15,6 @@
 ExpirableValue = namedtuple("ExpirableValue", ["value", "ttl"])
 # These providers will be dynamically initialized on first use of the helper functions
 DEFAULT_PROVIDERS: Dict[str, Any] = {}
-MULTIPLE_VALUES_TYPE: Union[Dict[str, str], Dict[str, dict], Dict[str, bytes], Dict[str, None]]
 TRANSFORM_METHOD_JSON = "json"
 TRANSFORM_METHOD_BINARY = "binary"
 SUPPORTED_TRANSFORM_METHODS = [TRANSFORM_METHOD_JSON, TRANSFORM_METHOD_BINARY]

aws_lambda_powertools/utilities/parser/envelopes/kinesis.py

@@ -41,5 +41,5 @@ def parse(self, data: Optional[Union[Dict[str, Any], Any]], model: Type[Model])
         for record in parsed_envelope.Records:
             # We allow either AWS expected contract (bytes) or a custom Model, see #943
             data = cast(bytes, record.kinesis.data)
-            models.append(self._parse(data=cast(bytes, record.kinesis.data).decode("utf-8"), model=model))
+            models.append(self._parse(data=data.decode("utf-8"), model=model))
         return models