revert(inspect-ui): drop htmlUrl + html_available type

API surface no longer needs the HTML route; Step.html_available has no
producer.

inspect-ui/src/api.ts

@@ -23,7 +23,3 @@ export function getStep(runId: string, index: number): Promise<Step> {
 export function screenshotUrl(runId: string, name: string): string {
   return `/api/runs/${encodeURIComponent(runId)}/screenshots/${encodeURIComponent(name)}`;
 }
-
-export function htmlUrl(runId: string, name: string): string {
-  return `/api/runs/${encodeURIComponent(runId)}/html/${encodeURIComponent(name)}`;
-}

inspect-ui/src/types.ts

@@ -126,5 +126,4 @@ export interface Step {
   hierarchy?: Hierarchy;
   residuals?: Record<string, ResidualNode>;
   metrics?: Metrics;
-  html_available?: boolean;
 }