remove old observabels logic

[gonpombo8]

merge when decentraland/unity-renderer#6163 reaches prod.

[cloudflare-workers-and-pages]

Deploying js-sdk-toolchain with    Cloudflare Pages

Latest commit:	5934dca
Status:	✅  Deploy successful!
Preview URL:	https://2a932723.js-sdk-toolchain.pages.dev
Branch Preview URL:	https://remove-old-observables.js-sdk-toolchain.pages.dev

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Test this pull request

• The @dcl/sdk package can be tested in scenes by running

  npm install "https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/remove/old-observables/dcl-sdk-7.4.22-9004399004.commit-5e2ee64.tgz"

• To test with npx init

  export SDK_COMMANDS="https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/remove/old-observables/dcl-sdk-commands-7.4.22-9004399004.commit-5e2ee64.tgz"
  npx $SDK_COMMANDS init

• The @dcl/inspector package can be tested by visiting this url

  • Or by installing it via NPM

  npm install "https://sdk-team-cdn.decentraland.org/@dcl/js-sdk-toolchain/branch/remove/old-observables/@dcl/inspector/dcl-inspector-7.4.22-9004399004.commit-5e2ee64.tgz"

• The /changerealm command to test test in-world

  /changerealm https://sdk-team-cdn.decentraland.org/ipfs/remove/old-observables-e2e
  

• You can preview this build entering:
  https://playground.decentraland.org/?sdk-branch=remove/old-observables