Cleanup code (conditionals)

Description

Problem: while writting blog post I remembered that we have an unnecessary type argument in Condition datatype from Lorentz.Rebinded. Would be nice to get rid of it if it does not break any code.

Solution: remove it.

Related issue(s)

https://issues.serokell.io/issue/PR-210

✅ Checklist for your Merge Request

Related changes (conditional)

• Tests (see short guidelines)

  • If I added new functionality, I added tests covering it.
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    • README
    • Haddock
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