test: remove E2E test for ngrx Effect decorator usage #7448

Job	Run time
build	1m 56s
lint	2m 0s
e2e_windows (windows-2025, 22, npm, 0)	1m 58s
e2e_windows (windows-2025, 22, npm, 1)	1m 57s
e2e_windows (windows-2025, 22, npm, 2)	1m 51s
e2e_windows (windows-2025, 22, npm, 3)	1m 52s
e2e_windows (windows-2025, 22, npm, 4)	1m 49s
e2e_windows (windows-2025, 22, npm, 5)	1m 52s
e2e_windows (windows-2025, 22, esbuild, 0)	1m 58s
e2e_windows (windows-2025, 22, esbuild, 1)	2m 1s
e2e_windows (windows-2025, 22, esbuild, 2)	2m 0s
e2e_windows (windows-2025, 22, esbuild, 3)	1m 53s
e2e_windows (windows-2025, 22, esbuild, 4)	1m 54s
e2e_windows (windows-2025, 22, esbuild, 5)	1m 58s
publish-snapshots	1s
Browser Compatibility Tests	1s
test	1s
e2e	1s
e2e-snapshots	1s
e2e-package-managers	1s
	27m 5s

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