Revert "EGL: Refactor multifile blobcache"

Revert submission 21108066-blobcache_multifile_20230125

Reason for revert: b/267777424

Reverted changes: /q/submissionid:21108066-blobcache_multifile_20230125

Change-Id: Ieb94d531a12b29b61958d3d5c601be544e429d79
9 files changed