Simplify transformer tests #682

Job	Run time
Julia 1.8 - ubuntu-latest - x64 - pull_request	10m 23s
Julia 1.8 - macOS-latest - x64 - pull_request	16m 9s
Julia 1.8 - windows-latest - x64 - pull_request	11m 49s
Julia 1.9 - ubuntu-latest - x64 - pull_request	8m 18s
Julia 1.9 - macOS-latest - x64 - pull_request	9m 24s
Julia 1.9 - windows-latest - x64 - pull_request	7m 56s
Julia ^1.10.0-0 - ubuntu-latest - x64 - pull_request	7m 15s
Julia ^1.10.0-0 - macOS-latest - x64 - pull_request	10m 57s
Julia ^1.10.0-0 - windows-latest - x64 - pull_request	7m 29s
Julia nightly - ubuntu-latest - x64 - pull_request	11m 15s
Julia nightly - macOS-latest - x64 - pull_request	25m 16s
Julia nightly - windows-latest - x64 - pull_request	10m 49s
	2h 17m 0s

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