refactor: remove edgezone config

[cameronmeissner]

What type of PR is this?

What this PR does / why we need it:

Which issue(s) this PR fixes:

Fixes #

Requirements:

• uses conventional commit messages
• includes documentation
• adds unit tests
• tested upgrade from previous version

Special notes for your reviewer:

Release note:

none

[coveralls]

Pull Request Test Coverage Report for Build 9653706176

Details

• 0 of 7 (0.0%) changed or added relevant lines in 1 file are covered.
• 1 unchanged line in 1 file lost coverage.
• Overall coverage decreased (-0.3%) to 75.713%

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Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pkg/agent/datamodel/sig_config.go	0	7	0.0%

Files with Coverage Reduction	New Missed Lines	%
pkg/agent/datamodel/sig_config.go	1	60.0%

Totals
Change from base Build 9651915496:	-0.3%
Covered Lines:	2575
Relevant Lines:	3401

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💛 - Coveralls