Revert "MDL-44548 mod_scorm: force an external sync to check for updated files."

This reverts commit 8af706e33bd939953681d6ef9a81684ed771b09a.
Revert "MDL-47684 mod: better validation of rating options"

This reverts commit c58758d20751fa79ca685743074a433958381209.
weekly release 2.7.2+