Remove integration tests scaffolding for main app #2728

Job	Run time
Build on ubuntu-latest (nightly)	3m 19s
Build on ubuntu-latest (stable)	3m 19s
Build on macos-latest (nightly)	3m 43s
Formatting	14s
Build on macos-latest (stable)	5m 25s
Build on windows-latest (nightly)	6m 53s
Build on windows-latest (stable)	6m 42s
Static Analysis (nightly)	2m 0s
Static Analysis (stable)	2m 11s
Units (nightly)	11m 16s
Units (stable)	12m 4s
E2E (nightly)	17m 25s
E2E (stable)	17m 42s
	1h 32m 13s

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