delete bzip2 as it is not updated for more than three years so it is not in the priority

Author: am0o0

cpp/ql/src/experimental/query-tests/Security/CWE/CWE-409/Bzip2.qll

@@ -6,7 +6,6 @@ import ZlibInflator
 import ZlibUncompress
 import LibArchive
 import ZSTD
-import Bzip2
 import Brotli
 
 /**