Remove csv serialization support

app/bulk_persistence/dataframe_serializer.py

@@ -152,12 +152,6 @@ class DataframeSerializerAsync:
         func = partial(DataframeSerializerSync.to_json, df, orient, *args, **kwargs)
         return await asyncio.get_event_loop().run_in_executor(self.executor, func)
 
-    @with_trace("CSV bulk serialization")
-    async def to_csv(self, df: pd.DataFrame, *args, **kwargs) -> Optional[str]:
-        df = df.fillna("NaN")
-        func = partial(df.to_csv, *args, **kwargs)
-        return await asyncio.get_event_loop().run_in_executor(self.executor, func)
-
     @with_trace("Parquet bulk deserialization")
     async def read_parquet(self, data) -> pd.DataFrame:
         return await asyncio.get_event_loop().run_in_executor(

app/bulk_persistence/mime_types.py

@@ -57,8 +57,6 @@ class MimeTypes:
 
     JSON = MimeType(type="application/json", extension=".json")
 
-    CSV = MimeType(type="text/csv", extension=".csv")
-
     MSGPACK = MimeType(
         type="application/x-msgpack",
         extension=".msgpack",

app/routers/bulk/utils.py

@@ -248,10 +248,6 @@ class DataFrameRender:
             content = await DataframeSerializerAsync().to_json(pdf, index=True, date_format='iso', orient=orient.value)
             return Response(content, media_type=MimeTypes.JSON.type)
 
-        if MimeTypes.CSV.type in accept:
-            content = await DataframeSerializerAsync().to_csv(pdf)
-            return Response(content, media_type=MimeTypes.CSV.type)
-
         content = await DataframeSerializerAsync().to_parquet(pdf)
         return Response(content, media_type=MimeTypes.PARQUET.type)