Revert "feat(fcm): Enabled direct_boot_ok Android Config parameter."

This reverts commit 6651302.

firebase_admin/_messaging_encoder.py

@@ -160,15 +160,6 @@ def check_analytics_label(cls, label, value):
             raise ValueError('Malformed {}.'.format(label))
         return value
 
-    @classmethod
-    def check_boolean(cls, label, value):
-        """Checks if the given value is boolean."""
-        if value is None:
-            return None
-        if not isinstance(value, bool):
-            raise ValueError('{0} must be a boolean.'.format(label))
-        return value
-
     @classmethod
     def check_datetime(cls, label, value):
         """Checks if the given value is a datetime."""
@@ -223,8 +214,6 @@ def encode_android_fcm_options(cls, fcm_options):
         result = {
             'analytics_label': _Validators.check_analytics_label(
                 'AndroidFCMOptions.analytics_label', fcm_options.analytics_label),
-            'direct_boot_ok': _Validators.check_boolean(
-                'AndroidFCMOptions.direct_boot_ok', fcm_options.direct_boot_ok)
         }
         result = cls.remove_null_values(result)
         return result

firebase_admin/_messaging_utils.py

@@ -203,13 +203,10 @@ class AndroidFCMOptions:
     Args:
         analytics_label: contains additional options for features provided by the FCM Android SDK
             (optional).
-        direct_boot_ok: A boolean indicating whether messages will be allowed to be delivered to
-            the app while the device is in direct boot mode.
     """
 
-    def __init__(self, analytics_label=None, direct_boot_ok=None):
+    def __init__(self, analytics_label=None):
         self.analytics_label = analytics_label
-        self.direct_boot_ok = direct_boot_ok
 
 
 class WebpushConfig: