Revert change to tracing (#10578)

Although we thought this fixed the bug, it just worked around it, and
runnign two copies of tracing in one app is a bad idea.

Simplify default RUST_LOG in development to avoid
 https://github.com/tokio-rs/tracing/issues/2927#issuecomment-2040080189



Release Notes:

- N/A

crates/collab/Cargo.toml

@@ -64,7 +64,7 @@ toml.workspace = true
 tower = "0.4"
 tower-http = { workspace = true, features = ["trace"] }
 tracing = "0.1.40"
-tracing-subscriber = { git = "https://github.com/tokio-rs/tracing", rev = "tracing-subscriber-0.3.18", features = ["env-filter", "json", "registry", "tracing-log"] } # workaround for https://github.com/tokio-rs/tracing/issues/2927
+tracing-subscriber = { version = "0.3.18", features = ["env-filter", "json", "registry", "tracing-log"] } # workaround for https://github.com/tokio-rs/tracing/issues/2927
 util.workspace = true
 uuid.workspace = true