fix(coderd/prometheusmetrics)!: filter deleted wsbuilds to reduce db load (#19197)

This change removes the `GetLatestWorkspaceBuilds` query which includes
all workspaces for all time (including deleted). This allows us to also
stop using `GetProvisionerJobsByIDs` for said builds as the job status
is included in `GetWorkspaces` called separately.

**BREAKING CHANGE**: The `coderd_api_workspace_latest_build` Prometheus
metric no longer includes builds belonging to deleted workspaces, as
such, this metric will show fewer statuses.

Fixes coder/internal#717

coderd/database/queries/workspacebuilds.sql

@@ -91,20 +91,6 @@ JOIN
 	 workspace_build_with_user AS wb
 ON m.workspace_id = wb.workspace_id AND m.max_build_number = wb.build_number;
 
--- name: GetLatestWorkspaceBuilds :many
-SELECT wb.*
-FROM (
-    SELECT
-        workspace_id, MAX(build_number) as max_build_number
-    FROM
-		workspace_build_with_user AS workspace_builds
-    GROUP BY
-        workspace_id
-) m
-JOIN
-	 workspace_build_with_user AS wb
-ON m.workspace_id = wb.workspace_id AND m.max_build_number = wb.build_number;
-
 -- name: InsertWorkspaceBuild :exec
 INSERT INTO
 	workspace_builds (