ext/intl: Remove some unused headers

Probably more cleanup can be done

Author: Girgias

ext/intl/grapheme/grapheme_util.c

@@ -28,8 +28,6 @@
 #include <unicode/ubrk.h>
 #include <unicode/usearch.h>
 
-#include "ext/standard/php_string.h"
-
 ZEND_EXTERN_MODULE_GLOBALS( intl )
 
 /* }}} */

ext/intl/transliterator/transliterator.h

@@ -18,8 +18,6 @@
 #include <php.h>
 #include <unicode/utrans.h>
 
-#include "zend_smart_str.h"
-
 smart_str transliterator_parse_error_to_string( UParseError* pe );
 
 #endif /* #ifndef TRANSLITERATOR_TRANSLITERATOR_H */