chore: revert webrtc integration docs

[chmjkb]

Description

Reverting this doc as it's not going to be released now, due to some more testing needed to be done. Once the integration is tested by Fishjam fellas, we'll revert this commit.

Introduces a breaking change?

• Yes
• No

Type of change

• Bug fix (change which fixes an issue)
• New feature (change which adds functionality)
• Documentation update (improves or adds clarity to existing documentation)
• Other (chores, tests, code style improvements etc.)

Tested on

• iOS
• Android

Testing instructions

Screenshots

Related issues

Checklist

• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have updated the documentation accordingly
• My changes generate no new warnings

Additional notes

[msluszniak]

Why not reverting the whole thing?

[chmjkb]

Why not reverting the whole thing?

I don't see a reason to revert the package, as it's not a core of the library, it's not user-facing in any way.