Remove db related functions.

mailnews/base/public/nsIMsgFolder.h

@@ -145,9 +145,6 @@ class nsIMsgFolder : public nsIFolder {
   /* boolean DisplayRecipients (); */
   NS_IMETHOD DisplayRecipients(PRBool *_retval) = 0;
 
-  /* void ReadDBFolderInfo (in boolean force); */
-  NS_IMETHOD ReadDBFolderInfo(PRBool force) = 0;
-
   /* readonly attribute string relativePathName; */
   NS_IMETHOD GetRelativePathName(char * *aRelativePathName) = 0;
 

mailnews/base/public/nsIMsgFolder.idl

@@ -88,8 +88,6 @@ interface nsIMsgFolder : nsIFolder {
 
 	boolean DisplayRecipients();
 
-	void ReadDBFolderInfo(in boolean force);
-
 	readonly attribute string relativePathName;
 	readonly attribute unsigned long sizeOnDisk;