Revert "Prefer mime type from content over file name when loading"
This reverts commit 6a79391a. That commit caused Gwenview to lose the ability to open RAW files. This is a more serious regression than the bug being fixed by the commit (329140), so it needs to be reverted for now until that bug can be fixed in a way that doesn't regress RAW loading. BUG: 441698 FIXED-IN: 21.12.2 CCMAIL: firstname.lastname@example.org