Remove OUSG temp code (#1211)

## High Level Overview of Change

<!--
Please include a summary/list of the changes.
If too broad, please consider splitting into multiple PRs.
-->

previously had added temp code as a part of a customer request. Ondo's
token now shows up with our new tokenlist whitelisting logic, so
removing as cleanup

### Context of Change

<!--
Please include the context of a change.
If a bug fix, when was the bug introduced? What was the behavior?
If a new feature, why was this architecture chosen? What were the
alternatives?
If a refactor, how is this better than the previous implementation?

If there is a design document for this feature, please link it here.
-->

### Type of Change

<!--
Please check relevant options, delete irrelevant ones.
-->

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [x] Refactor (non-breaking change that only restructures code)
- [ ] Tests (You added tests for code that already exists, or your new
feature included in this PR)
- [ ] Documentation Updates
- [ ] Translation Updates
- [ ] Release

### Codebase Modernization

<!--
In an effort to modernize the codebase, you should convert the files
that you work with to React Hooks and TypeScript,
and update tests to use the React Testing Library instead of Enzyme. If
this is not possible (e.g. it's too many
changes, touching too many files, etc.) please explain why here.
-->

- [ ] Updated files to React Hooks
- [ ] Updated files to TypeScript
- [ ] Updated tests to React Testing Library

## Before / After

<!--
If just refactoring / back-end changes, this can be just an in-English
description of the change at a technical level.
If a UI change, screenshots should be included.
-->

## Test Plan

<!--
Please describe the tests that you ran to verify your changes and
provide instructions so that others can reproduce.
-->

<!--
## Future Tasks
For future tasks related to PR.
-->

---------

Co-authored-by: pdp2121 <71317875+pdp2121@users.noreply.github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Omar Khan <khancodegt@gmail.com>
Co-authored-by: Phu Pham <ppham@ripple.com>

Author: 4 people

server/routes/v1/tokens.js

@@ -47,20 +47,6 @@ async function fetchXRPLMetaTokens(offset) {
     })
 }
 
-// TEMP: Manually add OUSG for Ondo until token is KYCed
-async function tempFetchOndo(offset) {
-  log.info(`caching OUSG token from ${process.env.XRPL_META_URL}`)
-  return axios
-    .get(
-      `https://${process.env.XRPL_META_URL}/tokens?name_like=rHuiXXjHLpMP8ZE9sSQU5aADQVWDwv6h5p`,
-    )
-    .then((resp) => resp.data)
-    .catch((e) => {
-      log.error(e)
-      return { count: 0 }
-    })
-}
-
 async function cacheXRPLMetaTokens() {
   let offset = 0
   let tokensDataBatch = {}
@@ -84,9 +70,6 @@ async function cacheXRPLMetaTokens() {
       result.meta.issuer.trust_level === 3,
   )
 
-  // TEMP: Manually add OUSG for Ondo until token is KYCed
-  const ondoTokens = await tempFetchOndo()
-  cachedTokenSearchList.tokens.push(...ondoTokens.tokens)
   cachedTokenSearchList.last_updated = Date.now()
 
   // nonstandard from XRPLMeta, check for hex codes in currencies and store parsed