Remove tasty-expected-failure from dependencies

[felixonmars]

Builds fine and all tests pass here.

[Bodigrim]

It seems that we actually do not use tasty-expected-failure at all: no module imports Test.Tasty.ExpectedFailure. Could it be possibly removed from dependencies?

[felixonmars]

It seems that we actually do not use tasty-expected-failure at all: no module imports Test.Tasty.ExpectedFailure. Could it be possibly removed from dependencies?

Indeed. Updated :)

[lehins]

I also made a revision on hackage and removed the bounds on tasty-expected-failure. Removing the dependency itself is not possible with a revision, but there is no need for a redundant dependency getting in a way with its bounds.

Thank you for catching this.