Cleanup common docs processing files that use the docker image once the new docs tools are integrated.

JS, Java, Net and Python are the languages that use the Docker Images for docs validation. New docs tools are being developed for by the docs teams that will allow us to remove the dependency on the docker images but the common scripts and yml files cannot be cleaned up until all of this work is done.

The items in eng/common that need to have DocValidationImageId processing removed are:

- [update-docsms-metadata.yml](https://github.com/Azure/azure-sdk-tools/blob/main/eng/common/pipelines/templates/steps/update-docsms-metadata.yml)
- [Update-DocsMsMetadata.ps1](https://github.com/Azure/azure-sdk-tools/blob/main/eng/common/scripts/Update-DocsMsMetadata.ps1)
- [Update-DocsMsPackages.ps1](https://github.com/Azure/azure-sdk-tools/blob/main/eng/common/scripts/Update-DocsMsPackages.ps1)

Being common, these are also going to require matching changes in the language repositories, specifically anything calling the ValidateDocsMsPackagesFn function pointer. Note: The language specific yml files that include the update-docsms-metadata.yml template should have their references to DocValidationImageId removed at the time the new docs generation tools are enabled for that language.