[VOL-4371] Voltha protos cleanup

Change-Id: I089b100a4a6268f455b6554051e21d5ca2578204
diff --git a/.golangci.yml b/.golangci.yml
index b2483cb..4260164 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -59,4 +59,5 @@
     - "Error return value of `oo.sendNextRequest` is not checked"
     - "Error return value of `oo.pDevOmciCC.send` is not checked"
     - "Error return value of `onuDeviceEntry.mibDbClass` is not checked"
+    - "SA1019: voltha.ImageDownload is deprecated"
   exclude-use-default: false