Remove pointless #imports from .m and .h files

This was done with a brute-force approach, ensuring no additional
warnings from GCC 4.9 under x86_64.

UI/AdministrationUI/UIxAdministrationAclEditor.m

@@ -18,22 +18,13 @@
  * Boston, MA 02111-1307, USA.
  */
 
-#import <Foundation/NSArray.h>
 #import <Foundation/NSValue.h>
-#import <Foundation/NSDictionary.h>
-#import <Foundation/NSEnumerator.h>
-#import <Foundation/NSKeyValueCoding.h>
 
-#import <NGObjWeb/SoSecurityManager.h>
-#import <NGObjWeb/SoUser.h>
 #import <NGObjWeb/WORequest.h>
 #import <NGObjWeb/WOResponse.h>
-#import <NGCards/iCalPerson.h>
 #import <SOGo/NSArray+Utilities.h>
 #import <SOGo/NSDictionary+Utilities.h>
-#import <SOGo/SOGoContentObject.h>
 #import <SOGo/SOGoGCSFolder.h>
-#import <SOGo/SOGoPermissions.h>
 #import <SOGo/SOGoSystemDefaults.h>
 #import <SOGo/SOGoUser.h>
 #import <SOGo/SOGoUserManager.h>