updater: Remove 32-bit Support

[derrod]

Description

Removes remaining support for updating a 32 bit OBS build from the updater.

(Ideally this should be merged after

• #8070
• #8114
• #8115

so I only have to solve conflicts (if any) in this PR and

• #8074

)

Motivation and Context

Code cleanup before more updates.

OBS has not provided 32 bit releases since 28.0.

How Has This Been Tested?

Updater still works.

Types of changes

• Code cleanup (non-breaking change which makes code smaller or more readable)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• [x] My code has been run through clang-format.
• [x] I have read the contributing document.
• [x] My code is not on the master branch.
• [x] The code has been tested.
• [x] All commit messages are properly formatted and commits squashed where appropriate.
• [x] I have included updates to all appropriate documentation.