refactor: get connection token deprecation

[bashleigh]

getConnectionToken & Connection type were deprecated.

Unwilling to merge until IaaS DNS changes have been merged to production

[rpt-uk-github]

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[codacy-production]

Coverage summary from Codacy

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Coverage variation	Diff coverage
Report missing for 1b7a7a41	✅ ∅

Coverage variation details

	Coverable lines	Covered lines	Coverage
Common ancestor commit (1b7a7a4)	Report Missing	Report Missing	Report Missing
Head commit (04e8b17)	1632	992	60.78%

Coverage variation is the difference between the coverage for the head and common ancestor commits of the pull request branch: <coverage of head commit> - <coverage of common ancestor commit>

Diff coverage details

	Coverable lines	Covered lines	Diff coverage
Pull request (#11572)	0	0	∅ (not applicable)

Diff coverage is the percentage of lines that are covered by tests out of the coverable lines that the pull request added or modified: <covered lines added or modified>/<coverable lines added or modified> * 100%

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