Fixed hardcoded URL to AIOS chat on local environments

[joshprk]

Hardcoded URL leads user using AIOS locally to the live version at https://my.aios.foundation/chat.

Also removed unused entries. Speeds up compilation time

EDIT: I also accidentally included a commit that defaults the agent to @example/academic_agent if no agent is provided as the WebUI does not work without a mention. I’ll separate this into another draft when I come home today, but if someone reviews this early please take this in mind. I plan to write a draft for doing more structured inputting of the chat command instead of using regex to parse after the fact

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[joshprk]

Reverted change, ready for review