Change 'postback.params' type from python object to dict. (line#64)

Author: be-hase

models/__init__.py

@@ -31,7 +31,6 @@
     PostbackEvent,
     BeaconEvent,
     Postback,
-    Params,
     Beacon,
 )
 from .imagemap import (  # noqa

models/events.py

@@ -269,50 +269,15 @@ def __init__(self, data=None, params=None, **kwargs):
         """__init__ method.
 
         :param str data: Postback data
-        :param params: JSON object with the date and time
+        :param dict params: JSON object with the date and time
             selected by a user through a datetime picker action.
             Only returned for postback actions via the datetime picker.
-        :type params: T <= :py:class:`linebot.models.events.Params`
         :param kwargs:
         """
         super(Postback, self).__init__(**kwargs)
 
         self.data = data
-        self.params = self.get_or_new_from_json_dict(
-            params, Params
-        )
-
-
-class Params(Base):
-    """Params.
-
-    Object with the date and time selected by a user
-    through a datetime picker action.
-    The format for the full-date, time-hour, and time-minute
-    as shown below follow the RFC3339 protocol.
-
-    https://devdocs.line.me/en/#postback-params-object
-    """
-
-    def __init__(self, date=None, time=None, datetime=None, **kwargs):
-        """__init__ method.
-
-        :param str date: Date selected by user.
-            Only included in the date mode.
-            Format: full-date
-        :param str time: Time selected by the user.
-            Only included in the time mode.
-            Format: time-hour":"time-minute
-        :param str datetime: Date and time selected by the user.
-            Only included in the datetime mode.
-            Format: full-date"T"time-hour":"time-minute
-        :param kwargs:
-        """
-        super(Params, self).__init__(**kwargs)
-
-        self.date = date
-        self.time = time
-        self.datetime = datetime
+        self.params = params
 
 
 class Beacon(Base):