[2/n] Remove otel layer from tracing logger (#3041)

<!-- CURSOR_SUMMARY -->
> [!NOTE]
> Drops OTEL log export and related config/deps, simplifying logger
setup and call sites.
> 
> - **Logging (framework-cli)**:
> - Remove OpenTelemetry/OTLP export layer and related code
(`export_to`, OTEL layer creation, `LoggerError`, `CustomFields`).
> - Simplify `setup_logging` API (no `machine_id`) and modern/legacy
setup paths; retain session ID option and file/stdout outputs.
> - **CLI main**:
> - Update call site to `setup_logging(&config.logger)` and retrieve
`machine_id` afterward.
> - **Dependencies**:
> - Remove `opentelemetry*` crates and appender from `Cargo.toml` and
lockfile; adjust transitive references to generic `opentelemetry` where
needed.
>   - Clean up cargo-machete ignored list (drop `opentelemetry-http`).
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
2244806. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

---------

Co-authored-by: Dave Seleno <958603+onelesd@users.noreply.github.com>

Author: LucioFranco

Cargo.lock

@@ -35,7 +35,7 @@ convert_case = "0.6.0"
 humantime = "2.1.0"
 uuid = { version = "1.6", features = ["v4", "serde"] }
 serde_json = { version = "1.0.133", features = ["preserve_order"] }
-serde_urlencoded = "0.7" 
+serde_urlencoded = "0.7"
 semver = "1.0"
 base64 = "0.22.0"
 async-recursion = "1.1.0"
@@ -84,23 +84,6 @@ logos = "0.15.0"
 # Monitoring
 tracing = "0.1.40"
 tracing-subscriber = { version = "0.3", features = ["env-filter", "json", "fmt"] }
-opentelemetry_sdk = { version = "0.29.0", features = [
-    "logs",
-    "metrics",
-    "trace",
-    "rt-tokio",
-] }
-opentelemetry-semantic-conventions = "0.29"
-opentelemetry = "0.29"
-opentelemetry-appender-tracing = "0.29.0"
-opentelemetry-otlp = { version = "0.29.0", default-features = false, features = [
-    "logs",
-    "metrics",
-    "trace",
-    "http-json",
-    "tokio",
-] }
-opentelemetry-http = { version = "0.29.0", features = ["reqwest"] }
 prometheus-client = "0.23"
 serde_yaml = "0.9.34"
 temporal-sdk-core = { git = "https://github.com/temporalio/sdk-core.git", rev = "b94b2fc172c2740705b3454a0e04b856fe426233" }
@@ -137,4 +120,4 @@ walkdir = "2"
 used_linker = []
 
 [package.metadata.cargo-machete]
-ignored = ["opentelemetry-http", "prost-types", "rustpython-ast"]
+ignored = ["prost-types", "rustpython-ast"]