Migration flow: Remove FTP option from credential form in migration flow

[ouikhuan]

Related to #85704

Proposed Changes

• Remove options for providing FTP credentials from the credential form screen (as this has no appreciable effect on performance).

Testing Instructions

• Navigate to http://calypso.localhost:3000/setup/import-focused/import?siteSlug=ATOMIC_SITE_SLUG
• Fill in a source site you'd like to migrate from, it can be a JN site.
• Make the Jetpack connection if needed and once you land on the You are ready to migrate screen, click Provide the server credentials link.
• Make sure you see SSH/SFTP as the default credential type in the form.
• Make sure the port number is 22.
• When you select credential type dropdown, there will be no FTP option.

Pre-merge Checklist

• Has the general commit checklist been followed? (PCYsg-hS-p2)
• https://wpcalypso.wordpress.com/devdocs/docs/testing/index.md for your changes?
• Have you tested the feature in Simple (P9HQHe-k8-p2), Atomic (P9HQHe-jW-p2), and self-hosted Jetpack sites (PCYsg-g6b-p2)?
• Have you checked for TypeScript, React or other console errors?
• Have you used memoizing on expensive computations? More info in Memoizing with create-selector and Using memoizing selectors and Our Approach to Data
• Have we added the "[Status] String Freeze" label as soon as any new strings were ready for translation (p4TIVU-5Jq-p2)?
• For changes affecting Jetpack: Have we added the "[Status] Needs Privacy Updates" label if this pull request changes what data or activity we track or use (p4TIVU-ajp-p2)?

[github-actions]

Calypso Live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-92799

Jetpack Cloud live (direct link)

https://calypso.live?image=registry.a8c.com/calypso/app:build-92799&env=jetpack

[matticbot]

Here is how your PR affects size of JS and CSS bundles shipped to the user's browser:

Sections (~132 bytes added 📈 [gzipped])

name                     parsed_size           gzip_size
import-hosted-site-flow       +163 B  (+0.0%)      +88 B  (+0.0%)
import-flow                   +163 B  (+0.0%)      +88 B  (+0.0%)
settings-jetpack               +66 B  (+0.0%)      +22 B  (+0.0%)
jetpack-cloud-settings         +66 B  (+0.0%)      +22 B  (+0.0%)
backup                         +66 B  (+0.0%)      +22 B  (+0.0%)

Sections contain code specific for a given set of routes. Is downloaded and parsed only when a particular route is navigated to.

Legend

What is parsed and gzip size?

Parsed Size: Uncompressed size of the JS and CSS files. This much code needs to be parsed and stored in memory.
Gzip Size: Compressed size of the JS and CSS files. This much data needs to be downloaded over network.

Generated by performance advisor bot at iscalypsofastyet.com.

[bogiii]

I've tested and it works as described.
I left a comment about the small detail I found.

Also, the related ticket has action item:

• "Automatically open the screen to provide SSH credentials if the customer is a developer"

Are we going to cover it in this PR or the next?

[ouikhuan]

Also, the related ticket has action item:

• "Automatically open the screen to provide SSH credentials if the customer is a developer"
  Are we going to cover it in this PR or the next?

Just for the record that since this is a different feature, we'll handle it in a separate PR 👍

[a8ci18n]

Translation for this Pull Request has now been finished.