Remove dashboard brief from e2e coverage PR

tests/e2e/coverage_registry/GRAFANA_DASHBOARD.md

@@ -1,92 +0,0 @@
-# Grafana Dashboard Brief
-
-This dashboard should answer two questions:
-
-1. How much e2e coverage do we have by module right now?
-2. Is e2e coverage by module improving or regressing over time?
-
-The dashboard should use plain **Coverage** language. Avoid exposing P0/P1/P2 in the
-default view; tiers can be added later as a filter or drilldown.
-
-## Panels
-
-### Coverage by Module
-
-Use a bar chart or table with one row per module:
-
-- Core LLMs
-- Non-Core LLMs
-- MCPs
-- Management/UI
-- Reliability & Performance
-- Logging & Guardrails
-- Other
-
-Each row should show:
-
-- `covered`
-- `total`
-- `coverage_percent`
-
-Formula:
-
-```text
-coverage_percent = covered / total * 100
-```
-
-### Coverage Trend by Module
-
-Use a time-series chart with one line per module.
-
-- X-axis: CI run timestamp, scrape timestamp, or pushed metric timestamp
-- Y-axis: `coverage_percent`
-- Series label: module name
-
-This shows whether coverage is improving across dates.
-
-## Data Contract
-
-Generate coverage data from the registry collector:
-
-```bash
-cd tests/e2e
-PYTHONPATH=. python -m coverage_registry.collector --format prometheus --strict
-```
-
-For artifact-based jobs, JSON is also available:
-
-```bash
-cd tests/e2e
-PYTHONPATH=. python -m coverage_registry.collector --format json --strict
-```
-
-Prometheus metrics:
-
-```text
-litellm_e2e_coverage_cells{module="<module>",state="covered"} <count>
-litellm_e2e_coverage_cells{module="<module>",state="total"} <count>
-litellm_e2e_coverage_percent{module="<module>"} <percent>
-litellm_e2e_coverage_orphan_markers <count>
-litellm_e2e_coverage_collection_errors <count>
-```
-
-Grafana gets the trend by storing these metrics over time. No date needs to be encoded
-inside the metric itself.
-
-## Alerts
-
-Start with two alerts:
-
-- Unknown marker count is greater than zero.
-- Coverage percent for any module drops compared with the previous successful run.
-
-After existing collection warnings are fixed, add:
-
-- Collection error count is greater than zero.
-
-## Non-Goals
-
-- Do not use line coverage for this dashboard. This is behavior coverage, not source-line
-  coverage.
-- Do not let tests invent module names. Tests only declare `@pytest.mark.covers(...)`;
-  the registry decides which module a cell belongs to.

tests/e2e/coverage_registry/README.md

@@ -3,8 +3,7 @@
 This directory is the **denominator** for e2e test coverage: the set of behaviors we
 want covered, one row per behavior, checked into the repo so coverage is a number we
 can track instead of a guess. It implements the plan in the "E2E Coverage Tracking"
-note; the naming grammar lives in `tests/e2e/CLAUDE.md`. The Grafana dashboard contract
-lives in `GRAFANA_DASHBOARD.md`.
+note; the naming grammar lives in `tests/e2e/CLAUDE.md`.
 
 ## The model