Revert "Reland "EGL: Refactor multifile blobcache""

Revert submission 21292947-reland_blobcache_20230203

Reason for revert: Suspected cause of boot time regression

Reverted changes: /q/submissionid:21292947-reland_blobcache_20230203

Bug: b/266725576
Bug: b/268248090
Change-Id: Ic70ffa65d8d194b00106853d8c05b9cc2992e02d
9 files changed