Clean not needed serializers

api/v1/serializers.py

@@ -322,25 +322,7 @@ class UserSerializer(serializers.ModelSerializer):
         )
 
 
-class CoverImageSerializer(serializers.Serializer):
-    cover = Base64ImageField(
-        required=False, allow_empty_file=True, allow_null=True
-    )
-
-
 class UserPhotoSerializer(serializers.Serializer):
     photo = Base64ImageField(
         required=False, allow_empty_file=True, allow_null=True
     )
-
-
-class ContentImageSerializer(serializers.Serializer):
-    img = Base64ImageField(
-        required=False, allow_empty_file=True, allow_null=True
-    )
-
-
-class GalleryImageSerializer(serializers.Serializer):
-    image = Base64ImageField(
-        required=False, allow_empty_file=True, allow_null=True
-    )

api/v1/views.py

@@ -13,9 +13,8 @@ from .serializers import (
     ImageTextSerializer, VideoSerializer,
     GallerySerializer, GalleryImageSerializer,
     UserSerializer, UserPhotoSerializer,
-    LessonSerializer, ContentImageSerializer,
+    LessonSerializer, CourseRetrieveSerializer,
-    GalleryImageSerializer, CoverImageSerializer,
+    ImageObjectSerializer,
-    CourseRetrieveSerializer, ImageObjectSerializer,
 )
 from .permissions import IsAdmin, IsAdminOrIsSelf, IsAuthorOrAdmin, IsAuthorObjectOrAdmin