test: remove the OTLP whole-backend process E2E (#789)

The data plane will not ingest OTLP, so the controller -> backend -> OTLP
-> PromQL process test no longer describes a supported path. Remove it
with the `whole` e2e.sh stage, the CI control-plane build and env var
that only it used, its tokio-tungstenite dev-dependency, and the doc
references.

Co-authored-by: Claude Opus 5.5 <noreply@anthropic.com>

Author: zzylol

.github/workflows/mvp-ci.yml

@@ -74,12 +74,6 @@ jobs:
         # Preserve the existing warning policy while expanding runtime coverage.
         run: cargo clippy --workspace --all-targets --locked -- -D warnings
 
-      - name: Build process-test control plane
-        env:
-          CARGO_NET_GIT_FETCH_WITH_CLI: "true"
-        working-directory: ASAPQuery-backend
-        run: cargo build -p control_plane --bin control_plane --locked
-
       - name: Test workspace
         env:
           CARGO_NET_GIT_FETCH_WITH_CLI: "true"
@@ -88,6 +82,4 @@ jobs:
         working-directory: ASAPQuery-backend
         # Persistence tests wait on background flushers with bounded deadlines.
         # Match scripts/e2e.sh to avoid competing flushers exhausting those waits.
-        run: |
-          export ASAP_E2E_CONTROL_PLANE_BIN="$PWD/target/debug/control_plane"
-          cargo test --workspace --locked -- --test-threads=1
+        run: cargo test --workspace --locked -- --test-threads=1

Cargo.lock

@@ -90,7 +90,6 @@ fs2 = "0.4"
 asap-aware-mapping.workspace = true
 tempfile = "3.20.0"
 criterion = { version = "0.5", features = ["html_reports"] }
-tokio-tungstenite = "0.21"
 tower = { version = "0.5", features = ["util"] }
 http-body-util = "0.1"
 

data_plane/Cargo.toml

@@ -1134,8 +1134,7 @@ store with the Kafka consumer path.
 - **Unit tests -- other modules**: `window_manager.rs` (tumbling/sliding arithmetic, pane enumeration, closure detection), `series_buffer.rs` (ordering, watermark), `accumulator_factory.rs` (updater creation and reset), `series_router.rs` (consistent hash routing), `config.rs` (defaults).
 
 - **E2E coverage**: end-to-end paths now run through the OTLP receiver
-  driving the same `IngestState` (`tests/component_process_e2e.rs`,
-  `tests/backend_process_e2e.rs`; the runnable multi-node demo
+  driving the same `IngestState` (`tests/component_process_e2e.rs`; the runnable multi-node demo
   lives in ASAPCollector). The legacy in-process remote-write E2E binaries
   (`bin/test_e2e_precompute.rs`, `bin/e2e_quickstart_resource_test.rs`,
   `bin/bench_precompute_sketch.rs`) and the equivalent test