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.

SoObjects/SOGo/SOGoLDAPUserDefaults.m

@@ -24,13 +24,9 @@
 #include <stdlib.h>
 #include <ldap.h>
 
-#import <Foundation/NSArray.h>
-#import <Foundation/NSDictionary.h>
-#import <Foundation/NSString.h>
 
 #import <NGExtensions/NSObject+Logs.h>
 
-#import "SOGoLDAPUserDefaults.h"
 
 #define SOGoLDAPDescriptor @"/etc/sogo.conf"
 #define SOGoLDAPContainerSize 8192