acp: Remove ACP v0 (zed-industries#36785)

We had a few people confused about why some features weren't working due
to the fallback logic.

It's gone.

Release Notes:

- N/A

Author: ConradIrwin

Cargo.lock

@@ -426,7 +426,6 @@ zlog_settings = { path = "crates/zlog_settings" }
 # External crates
 #
 
-agentic-coding-protocol = "0.0.10"
 agent-client-protocol = "0.0.31"
 aho-corasick = "1.1"
 alacritty_terminal = { git = "https://github.com/zed-industries/alacritty.git", branch = "add-hush-login-flag" }

Cargo.toml

@@ -22,7 +22,6 @@ acp_thread.workspace = true
 action_log.workspace = true
 agent-client-protocol.workspace = true
 agent_settings.workspace = true
-agentic-coding-protocol.workspace = true
 anyhow.workspace = true
 client = { workspace = true, optional = true }
 collections.workspace = true