Revert "Issue #1927648 by damiankloip, Wim Leers, marthinal, tedbow, Arla, alexpott, juampynr, garphy, bc, ibustos, eiriksm, larowlan, dawehner, gcardinal, vivekvpandya, kylebrowning, Sam152, neclimdul, pnagornyak, drnikki, gaurav.goyal, queenvictoria, kim.pepper, Berdir, clemens.tolboom, blainelang, moshe weitzman, linclark, webchick, Dave Reid, dabito, skyredwang, klausi, dagmar, gabesullice, pwolanin, amateescu, slashrsm, andypost, catch, aheimlich: Allow creation of file entities from binary data via REST requests"

This reverts commit fd8233c7.

Issue #1927648 by damiankloip, Wim Leers, marthinal, tedbow, Arla, alexpott, juampynr, garphy, bc, ibustos, eiriksm, larowlan, dawehner, gcardinal, vivekvpandya, kylebrowning, Sam152, neclimdul, pnagornyak, drnikki, gaurav.goyal, queenvictoria, kim.pepper, Berdir, clemens.tolboom, blainelang, moshe weitzman, linclark, webchick, Dave Reid, dabito, skyredwang, klausi, dagmar, gabesullice, pwolanin, amateescu, slashrsm, andypost, catch, aheimlich: Allow creation of file entities from binary data via REST requests

Issue #2825487 by damiankloip, Wim Leers, garphy, cburschka, tedbow, dpovshed, tstoeckler, Munavijayalakshmi, Berdir, dawehner, e0ipso: Fix normalization of File entities: file entities should expose the file URL as a computed property on the 'uri' base field

Issue #2843139 by vaplas, Wim Leers, harings_rob, catch, Berdir, alexpott: EntityResource: Provide comprehensive test coverage for File entity, and tighten access control handler

Issue #2853211 by vaplas, Wim Leers, arshadcn: EntityResource::post() incorrectly assumes that every entity type has a canonical URL

Issue #2113345 by dawehner, tedbow, Wim Leers, kristiaanvandeneynde, Crell, Grayside, klausi: Define a mechanism for custom link relationships

Issue #2805281 by Wim Leers, damiankloip: ?_format=hal_json error responses are application/json, yet should be application/hal+json

Issue #2737719 by Wim Leers, dawehner: EntityResource: Provide comprehensive test coverage: for every entity type, every format, every method

Revert "Issue #2737719 by Wim Leers, dawehner: EntityResource: Provide comprehensive test coverage: for every entity type, every format, every method"

This reverts commit 59781ffc.

Issue #2737719 by Wim Leers, dawehner: EntityResource: Provide comprehensive test coverage: for every entity type, every format, every method