Final clean up for useQueryStateWithSelect (#43008)

## Context

Final clean up of `useQueryStateWithSelect` - removes the hook

apps/studio/hooks/misc/useQueryStateWithSelect.ts

@@ -1,62 +0,0 @@
-import { parseAsString, useQueryState } from 'nuqs'
-import { MutableRefObject, useEffect, useMemo } from 'react'
-import { toast } from 'sonner'
-
-/**
- * Hook for managing URL query parameters with a custom select function and error handling.
- *
- * @param enabled - Whether error handling is active (shows error when selectedId exists but select returns undefined)
- * @param urlKey - The query parameter key (e.g., 'edit', 'delete')
- * @param select - Function to transform the selected ID into the desired value (returns undefined if not found)
- * @param onError - Callback invoked when enabled is true and selectedId exists but select returns undefined
- *
- * @returns Object with:
- *   - value: The result of select(selectedId) or undefined
- *   - setValue: Function to set/clear the selected ID in the URL
- *
- * @deprecated Avoid using this hook, and use nuqs directly
- * Refer to this PR for more information: https://github.com/supabase/supabase/pull/41380
- * as well as context on how to refactor to remove usage of this hook
- */
-export function useQueryStateWithSelect<T>({
-  enabled,
-  urlKey,
-  select,
-  onError,
-}: {
-  enabled: boolean
-  urlKey: string
-  select: (id: string) => T | undefined
-  onError: (error: Error, selectedId: string) => void
-}) {
-  const [selectedId, setSelectedId] = useQueryState(
-    urlKey,
-    parseAsString.withOptions({ history: 'push', clearOnDefault: true })
-  )
-
-  const value = useMemo(() => (selectedId ? select(selectedId) : undefined), [selectedId, select])
-
-  useEffect(() => {
-    if (enabled && selectedId && !value) {
-      onError(new Error(`not found`), selectedId)
-      setSelectedId(null)
-    }
-  }, [enabled, onError, selectedId, setSelectedId, value])
-
-  return {
-    value,
-    setValue: setSelectedId as (value: string | null) => void,
-  }
-}
-
-export const handleErrorOnDelete = (
-  deletingIdRef: MutableRefObject<string | null>,
-  selectedId: string,
-  errorMessage: string
-) => {
-  if (selectedId !== deletingIdRef.current) {
-    toast.error(errorMessage)
-  } else {
-    deletingIdRef.current = null
-  }
-}