diff --git a/util/wrap-data.js b/util/wrap-data.js
deleted file mode 100644
index edcc99b..0000000
--- a/util/wrap-data.js
+++ /dev/null
@@ -1,15 +0,0 @@
-const { join } = require('path')
-const { readJson, outputFile } = require('fs-extra')
-
-console.log(`Reading packed time zone data source...`)
-const data = join(__dirname, './data/packed.json')
-readJson(data)
-  .then(content => {
-    console.log(`Writing full time zone data module...`)
-    const module = join(__dirname, '../src/lookup/data.js')
-    return outputFile(module, `export default ${JSON.stringify(content, undefined, 2)}`)
-  })
-  .catch(error => {
-    console.error(error)
-    process.exitCode = 1
-  })
diff --git a/util/wrap-limited-data.js b/util/wrap-limited-data.js
deleted file mode 100644
index e298e55..0000000
--- a/util/wrap-limited-data.js
+++ /dev/null
@@ -1,47 +0,0 @@
-const { join } = require('path')
-const { readJson, outputFile } = require('fs-extra')
-const tz = require('../node_modules/moment-timezone/moment-timezone-utils').tz
-const groupLeaders = require('./data/group-leaders.json')
-
-let data, start, end
-
-function prepare2012 () {
-  start = 2012
-  end = 2022
-  return data
-}
-
-function prepare1900 () {
-  start = 1900
-  end = 2050
-  return data
-}
-
-function readData () {
-  console.log(`Reading unpacked time zone data source...`)
-  const file = join(__dirname, './data/unpacked.json')
-  data = readJson(file)
-  return data
-}
-
-function limitData (data) {
-  return tz.filterLinkPack(data, start, end, groupLeaders)
-}
-
-function writeScript (data) {
-  console.log(`Writing limited time zone data module...`)
-  const module = join(__dirname, `../src/lookup/data-${start}-${end}.js`)
-  return outputFile(module, `export default ${JSON.stringify(data, undefined, 2)}`)
-}
-
-readData()
-  .then(prepare2012)
-  .then(limitData)
-  .then(writeScript)
-  .then(prepare1900)
-  .then(limitData)
-  .then(writeScript)
-  .catch(error => {
-    console.error(error)
-    process.exitCode = 1
-  })