Revert "Add key value coding for count on NSArray"

This reverts commit 9fa14f9.

mogenerator.m

@@ -57,17 +57,6 @@ - (NSArray*)entitiesWithACustomSubclassVerbose:(BOOL)verbose_ {
 @end
 
 
-@implementation NSArray (countKeyValueCoding)
-
-- (id)valueForKey:(NSString *)key {
-
-	if ([key isEqualToString:@"count"])
-		return [NSNumber numberWithUnsignedInteger:[self count]];
-
-	return [super valueForKey:key];
-}
-@end
-
 @implementation NSEntityDescription (customBaseClass)
 - (BOOL)hasCustomSuperentity {
 	NSEntityDescription *superentity = [self superentity];