Revert #76194 (#76987)

[Flang] Revert "Allow Intrinsic simpification with min/maxloc dim
and…scalar result (#76194)"

This reverts commit 9b7cf5bf.

See merge request #76194.

This change was causing several failures in our internal tests. I'm
reverting now and will work on creating a test that David Green can use
to reproduce the problem.