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.

OpenChange/MAPIStoreFolder.h

@@ -21,7 +21,6 @@
 #ifndef MAPISTOREFOLDER_H
 #define MAPISTOREFOLDER_H
 
-#import <Foundation/NSObject.h>
 
 @class NSArray;
 @class NSMutableArray;
@@ -39,7 +38,6 @@
 @class SOGoCacheGCSFolder;
 @class SOGoMAPIDBMessage;
 
-#import "MAPIStoreSOGoObject.h"
 
 @interface MAPIStoreFolder : MAPIStoreSOGoObject
 {