Remove Desktop Mode option as it is a duplicate now

[samartnik]

Description

In Site Settings Desktop Mode option is a duplicate of Desktop site and so we should remove it.

Steps to reproduce

1. Go to Site settings
2. There 2 options Desktop Mode and Desktop site

Actual result

There 2 options Desktop Mode and Desktop site

Expected result

Only Desktop site should be left.

Issue reproduces how often

Version/Channel Information:

• Can you reproduce this issue with the current Play Store version?
• Can you reproduce this issue with the current Play Store Beta version?
• Can you reproduce this issue with the current Play Store Nightly version?

Device details

• Install type (ARM, x86):
• Device type (Phone, Tablet, Phablet):
• Android version:

Brave version

Website problems only

• Does the issue resolve itself when disabling Brave Shields?
• Does the issue resolve itself when disabling Brave Rewards?
• Is the issue reproducible on the latest version of Chrome?

Additional information

[samartnik]

Test plan:

• Check that after upgrade to a newer version there is only 1 option left (Desktop site).
• Double check that Desktop site option works as intended (when on, all websites open in desktop mode by default and in mobile mode otherwise).
• Double check that Desktop site option in main menu able to override global option for current web site.
• Double check that when Desktop Mode option was on prior to upgrade, Desktop site global option is also on after upgrade regardless of its state before upgrade.

[kjozwiak]

The above will require 1.41.94 or higher for 1.41.x verification 👍

[kjozwiak]

Please wait till brave/brave-core#14053 gets uplifted into 1.41.x

[srirambv]

Verification passed on the following devices running 1.41.94 x64 build

• Verified steps from #23652 (comment)
• Verified there is only Desktop Site option under Site settings
• Verified enabling Desktop Site enables it globally on all new tabs and page loads using desktop mode
• Verified able to override the global settings via the menu settings
• Verified setting Desktop Mode to enabled on an older version and upgrading to 1.41.94 removes Desktop Mode from settings and sets Desktop Site to enabled

Oppo Reno 5 (Android 12)	Samsung Tab A (Android 10)
23652-ARM.mp4	23652-Tab.mp4