ext/phar: remove PHAR_HDR_COMPRESSION* flags as they are unused (php#22504)

Author: Girgias

ext/phar/phar.c

@@ -831,7 +831,6 @@ static zend_result phar_parse_pharfile(php_stream *fp, const char *fname, size_t
 
 	SAFE_PHAR_GET_32(buffer, endbuffer, manifest_flags);
 
-	manifest_flags &= ~PHAR_HDR_COMPRESSION_MASK;
 	manifest_flags &= ~PHAR_FILE_COMPRESSION_MASK;
 	/* remember whether this entire phar was compressed with gz/bzip2 */
 	manifest_flags |= compression;

ext/phar/phar_internal.h

@@ -38,10 +38,6 @@
 #define PHAR_API_MAJORVER_MASK    0xF000
 #define PHAR_API_VER_MASK         0xFFF0
 
-#define PHAR_HDR_COMPRESSION_MASK 0x0000F000
-#define PHAR_HDR_COMPRESSED_NONE  0x00000000
-#define PHAR_HDR_COMPRESSED_GZ    0x00001000
-#define PHAR_HDR_COMPRESSED_BZ2   0x00002000
 #define PHAR_HDR_SIGNATURE        0x00010000
 
 /* flags for defining that the entire file should be compressed */