Remove unused attribute b=123029 r+sr=bienvenu

mailnews/base/public/nsIMsgFolder.idl

@@ -70,7 +70,7 @@ typedef long nsMsgBiffState;
 // enumerated type for determining if a message has been replied to, forwarded, etc.
 typedef long nsMsgDispositionState;
 
-[scriptable, uuid(5711cb97-42ad-466d-9e8f-48b84a8b76a2)]
+[scriptable, uuid(cc921aaf-8ff1-4fd3-8a3d-1269bf87f459)]
 interface nsIMsgFolder : nsICollection {
 
 const nsMsgBiffState nsMsgBiffState_NewMail = 0; // User has new mail waiting.
@@ -409,11 +409,6 @@ const nsMsgBiffState nsMsgBiffState_Unknown = 2; // We dunno whether there is ne
    */
   attribute long sortOrder;
 
-  /** 
-   * used to determine if we persist the close / open state of this folder or not
-   */
-  [noscript]readonly attribute boolean persistElided;
-
   /* handy accessor when we want a msg folder */
   readonly attribute nsIMsgFolder parentMsgFolder;
 

mailnews/base/util/nsMsgDBFolder.cpp

@@ -1065,16 +1065,6 @@ NS_IMETHODIMP nsMsgDBFolder::ReadFromFolderCacheElem(nsIMsgFolderCacheElement *e
   nsXPIDLCString charset;
 
   element->GetInt32Property("flags", (PRInt32 *) &mFlags);
-
-  PRBool persistElided = PR_TRUE;
-  rv = GetPersistElided(&persistElided);
-  NS_ENSURE_SUCCESS(rv,rv);
-
-  // we aren't persisting elided, set the folder as closed
-  if (!persistElided) {
-    mFlags |= MSG_FOLDER_FLAG_ELIDED;
-  }
-
   element->GetInt32Property("totalMsgs", &mNumTotalMessages);
   element->GetInt32Property("totalUnreadMsgs", &mNumUnreadMessages);
   element->GetInt32Property("pendingUnreadMsgs", &mNumPendingUnreadMessages);
@@ -5074,13 +5064,6 @@ NS_IMETHODIMP nsMsgDBFolder::GetSortKey(PRUint8 **aKey, PRUint32 *aLength)
   return CreateCollationKey(orderString, aKey, aLength);
 }
 
-NS_IMETHODIMP nsMsgDBFolder::GetPersistElided(PRBool *aPersistElided)
-{
-  // by default, we should always persist the open / closed state of folders & servers
-  *aPersistElided = PR_TRUE;
-  return NS_OK;
-}
-
 nsresult
 nsMsgDBFolder::CreateCollationKey(const nsString &aSource,  PRUint8 **aKey, PRUint32 *aLength)
 {