diff --git a/src/middleware/middleware.builders.js b/src/middleware/middleware.builders.js
index 8b33f560..518fea9b 100644
--- a/src/middleware/middleware.builders.js
+++ b/src/middleware/middleware.builders.js
@@ -13,13 +13,6 @@ import { templateSchema } from '../routes/schemas.js'
 import { render } from '../utils/custom-renderer.js'
 import datasette from '../services/datasette.js'
 import * as v from 'valibot'
-import { dataSubjects } from '../utils/utils.js'
-
-const availableDatasets = Object.values(dataSubjects).flatMap((dataSubject) =>
-  (dataSubject.dataSets || [])
-    .filter((dataset) => dataset.available)
-    .map((dataset) => dataset.value)
-)
 
 export const FetchOptions = {
   /**
@@ -121,56 +114,6 @@ export async function fetchManyFn (req, res, next) {
   }
 }
 
-export async function fetchOneFromAllDatasetsFn (req, res, next) {
-  try {
-    const query = this.query({ req, params: req.params })
-    const promises = availableDatasets.map((dataset) => {
-      return datasette.runQuery(query, dataset).catch(error => {
-        logger.error('Query failed for dataset', { dataset, errorMessage: error.message, errorStack: error.stack, type: types.DataFetch })
-        throw error
-      })
-    })
-    const result = await Promise.all(promises)
-    req[this.result] = Object.fromEntries(
-      result.reduce((acc, { formattedData }, i) => {
-        if (formattedData.length > 0) {
-          acc.push([availableDatasets[i], formattedData[0]])
-        }
-        return acc
-      }, [])
-    )
-    logger.debug({ type: types.DataFetch, message: 'fetchOneFromAllDatasets', resultKey: this.result })
-    next()
-  } catch (error) {
-    logger.debug('fetchOneFromAllDatasetsFn: failed', { type: types.DataFetch, errorMessage: error.message, endpoint: req.originalUrl, resultKey: this.result })
-    req.handlerName = `fetching '${this.result}'`
-    next(error)
-  }
-}
-
-export async function fetchManyFromAllDatasetsFn (req, res, next) {
-  try {
-    const query = this.query({ req, params: req.params })
-    const promises = availableDatasets.map((dataset) => {
-      return datasette.runQuery(query, dataset).catch(error => {
-        logger.error('Query failed for dataset', { dataset, errorMessage: error.message, errorStack: error.stack, type: types.DataFetch })
-        throw error
-      })
-    })
-    const result = await Promise.all(promises)
-    req[this.result] = Object.fromEntries(
-      result.filter(({ formattedData }) => formattedData.length > 0)
-        .map(({ formattedData }, i) => [availableDatasets[i], formattedData])
-    )
-    logger.debug({ type: types.DataFetch, message: 'fetchManyFromAllDatasets', resultKey: this.result })
-    next()
-  } catch (error) {
-    logger.debug('fetchManyFromAllDatasetsFn: failed', { type: types.DataFetch, errorMessage: error.message, endpoint: req.originalUrl, resultKey: this.result })
-    req.handlerName = `fetching '${this.result}'`
-    next(error)
-  }
-}
-
 /**
    * Middleware. Does a conditional fetch. Optionally invokes `else` if condition is false.
    *
@@ -235,24 +178,6 @@ export function fetchMany (context) {
   return fetchManyFn.bind(context)
 }
 
-/**
-   * Fetches a single record from each dataset databases and stores them in `req` under key specified by `result` entry.
-   *
-   * @param {{query: ({req, params}) => object, result: string, dataset?: FetchParams | (req) => string}} context
-   */
-export function fetchOneFromAllDatasets (context) {
-  return fetchOneFromAllDatasetsFn.bind(context)
-}
-
-/**
-   * Fetches a collection of records from all dataset databases and stores them in `req` under key specified by `result` entry.
-   *
-   * @param {{query: ({req, params}) => object, result: string, dataset?: FetchParams | (req) => string}} context
-   */
-export function fetchManyFromAllDatasets (context) {
-  return fetchManyFromAllDatasetsFn.bind(context)
-}
-
 /**
  * Looks up schema for name in @{link templateSchema} (defaults to any()), validates and renders the template.
  *