Revert "oc: cached usercontext updates indexing_context"

This reverts commit 0750f64b787db088e944756b66fbd0883cf44cbf.

OpenChange/MAPIStoreUserContext.m

@@ -65,14 +65,7 @@ static NSMapTable *contextsTable = nil;
   id userContext;
 
   userContext = [contextsTable objectForKey: username];
-  if (userContext)
-    {
-      // The indexing_context used when this user context was created
-      // could had been freed, so we have to update it and use the one
-      // that we receive as parameter (which is a valid one for sure).
-      [userContext updateIndexing: indexing];
-    }
-  else
+  if (!userContext)
     {
       userContext = [[self alloc] initWithUsername: username
                                     andTDBIndexing: indexing];
@@ -83,11 +76,6 @@ static NSMapTable *contextsTable = nil;
   return userContext;
 }
 
-- (void) updateIndexing: (struct indexing_context *) indexing
-{
-    [mapping updateIndexing: indexing];
-}
-
 - (id) init
 {
   if ((self = [super init]))