Revert: Generalize keyword collision to name manipulation, Add...

Revert: Generalize keyword collision to name manipulation, Add {Lower,Upper}CaseNames Transforms (#1651)

* Revert "Add test of {Lower, Upper}CaseNames"

This reverts commit 93c078b8

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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

* Revert "Add --change-name-case <lower|upper> option"

This reverts commit d3ab7e2d

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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

* Revert "Add features.{LowerCaseNames, UpperCaseNames} transforms"

This reverts commit c8dcdacf

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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

* Revert "Refactor RemoveKeywordCollisions->ManipulateNames"

This reverts commit c534c5ab

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Signed-off-by: Schuyler Eldridge <schuyler.eldridge@ibm.com>

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>