Revert arrays

This is a combination of 5 commits.

Revert "Add an example with difficult cuts to eliminate"

This reverts commit fa9093d9555f9beedaa907e3c2180c8b4191637c.

Revert "Add ninja and replicate to parser, desugarer, resolver and uniques"

This reverts commit 3a756a348e2139428e263a9d1272c82f2ee53988.

Revert "progress in array implementation"

This reverts commit a5e272e58c9145aa796305de344446985a3f5552.

Revert "disambiguate"

This reverts commit ad65dea08e8012afde4d778d73a8553d1608b893.

Revert "git pushMerge branch 'master' of github.com:jyp/LL"

This reverts commit 62dc94f195692a7e3159540bd4fb776ebcfa8ee3, reversing
changes made to d1836c0d85c510b68463eec7c2382cdfb703b92e.