Remove Cache_Enabler_Disk::CACHE_FILE_HTML, Cache_Enabler_Disk::CACHE_FILE_GZIP, Cache_Enabler_Disk::CACHE_FILE_WEBP_HTML, and Cache_Enabler_Disk::CACHE_WEBP_GZIP. These constants are unnecessary because they are only called once (in the Cache_Enabler_Disk class) and are not needed in any other class.
Remove
Cache_Enabler_Disk::CACHE_FILE_HTML
,Cache_Enabler_Disk::CACHE_FILE_GZIP
,Cache_Enabler_Disk::CACHE_FILE_WEBP_HTML
, andCache_Enabler_Disk::CACHE_WEBP_GZIP
. These constants are unnecessary because they are only called once (in theCache_Enabler_Disk
class) and are not needed in any other class.