Remove redundant Trans instances on updating Mathlib

[chenson2018]

Making this issue so I don't forget to do this. We have these instances:

https://github.com/cs-lean/cslib/blob/0b5679294dbaf83a2a59e172687c88ccc0a5749d/Cslib/Semantics/ReductionSystem/Basic.lean#L46-L57

This was upstreamed in leanprover-community/mathlib4#27240, so we should remove these when updating Mathlib.

[chenson2018]

(note that #11 removes just the first instance which results in an ambiguous outParam that causes issues)