rtmp-services: Remove outdated Dolby Millicast locations

[FabienLavocat]

Description

Remove outdated Dolby Millicast locations from the RTMP Services list.

Motivation and Context

Update support for "Dolby Millicast" in RTMP Services.

How Has This Been Tested?

Local Build & CI Build

Types of changes

New feature (non-breaking change which adds functionality)

Checklist:

• My code has been run through clang-format.
• I have read the contributing document.
• My code is not on the master branch.
• The code has been tested.
• All commit messages are properly formatted and commits squashed where appropriate.
• I have included updates to all appropriate documentation.

[FabienLavocat]

Thanks @RytoEX for reviewing the other PR, I made a mistake on my config, so here's the new PR.

[RytoEX]

LGTM