Update API scheme to layer 91.

Telegram/SourceFiles/boxes/edit_caption_box.cpp

@@ -500,8 +500,7 @@ void EditCaptionBox::save() {
 			MTP_string(sending.text),
 			MTPInputMedia(),
 			MTPnullMarkup,
-			sentEntities,
-			MTP_inputGeoPointEmpty()),
+			sentEntities),
 		rpcDone(&EditCaptionBox::saveDone),
 		rpcFail(&EditCaptionBox::saveFail));
 }