diff --git a/moto/cognitoidentity/models.py b/moto/cognitoidentity/models.py
index 95663de5..d0ec2d73 100644
--- a/moto/cognitoidentity/models.py
+++ b/moto/cognitoidentity/models.py
@@ -6,7 +6,7 @@ import boto.cognito.identity
 from moto.compat import OrderedDict
 from moto.core import BaseBackend, BaseModel
 from moto.core.utils import iso_8601_datetime_with_milliseconds
-from .utils import get_random_identity_id, remove_capitalization_of_dict_keys
+from .utils import get_random_identity_id
 
 
 class CognitoIdentityObject(BaseModel):
diff --git a/moto/cognitoidentity/utils.py b/moto/cognitoidentity/utils.py
index 4832c204..d885e0e8 100644
--- a/moto/cognitoidentity/utils.py
+++ b/moto/cognitoidentity/utils.py
@@ -5,19 +5,3 @@ from moto.core.utils import get_random_hex
 
 def get_random_identity_id(region):
     return "{0}:{0}".format(region, get_random_hex(length=19))
-
-
-def remove_capitalization_of_dict_keys(obj):
-    if isinstance(obj, collections.Mapping):
-        result = obj.__class__()
-        for key, value in obj.items():
-            normalized_key = key[:1].lower() + key[1:]
-            result[normalized_key] = remove_capitalization_of_dict_keys(value)
-        return result
-    elif isinstance(obj, collections.Iterable) and not isinstance(obj, six.string_types):
-        result = obj.__class__()
-        for item in obj:
-            result += (remove_capitalization_of_dict_keys(item),)
-        return result
-    else:
-        return obj