don't commit the db for every news article expired r/sr = sspitzer 123922

mailnews/news/src/nsNewsFolder.cpp

@@ -1602,7 +1602,7 @@ NS_IMETHODIMP nsMsgNewsFolder::RemoveMessage(nsMsgKey key)
 {
   nsresult rv = GetDatabase(nsnull);
   NS_ENSURE_SUCCESS(rv, rv); // if GetDatabase succeeds, mDatabase will be non-null
-  return mDatabase->DeleteMessage(key, nsnull, PR_TRUE);
+  return mDatabase->DeleteMessage(key, nsnull, PR_FALSE);
 }
 
 NS_IMETHODIMP nsMsgNewsFolder::CancelComplete()