Revert "Add upper bounds for hjsonschema."
Revert "Add upper bounds for hjsonschema."

This reverts commit 171666a285327f0a39dc5f9e94d2edfe4d600bd1.

Please see https://github.com/seagreen/hjsonschema/issues/48.

asr/stackage,mgajda/stackage,judah/stackage,fpco/stackage,massysett/stackage,Shimuuar/stackage,Daniel-Diaz/stackage,wereHamster/stackage,iand675/stackage,alanz/stackage,michalkonecny/stackage,peti/stackage,simonmichael/stackage,lwm/stackage,k0ral/stackage,int-index/stackage,jonschoning/stackage,creichert/stackage,mrkkrp/stackage,ethercrow/stackage,mstksg/stackage,soenkehahn/stackage,fimad/stackage,ygale/stackage,phaazon/stackage,clinty/stackage,stackbuilders/stackage,garetxe/stackage,spencerjanssen/stackage,athanclark/stackage,GregorySchwartz/stackage