refactor(@angular/build): remove unneeded babel import attributes syn… #1443

Job	Run time
build	15s
lint	2m 8s
e2e_windows (windows-2025, 22, npm, 0)	1m 8s
e2e_windows (windows-2025, 22, npm, 3)	1m 53s
e2e_windows (windows-2025, 22, npm, 2)	32s
e2e_windows (windows-2025, 22, npm, 4)	31s
e2e_windows (windows-2025, 22, npm, 1)	2m 4s
e2e_windows (windows-2025, 22, esbuild, 2)	24s
e2e_windows (windows-2025, 22, esbuild, 1)	1m 11s
e2e_windows (windows-2025, 22, npm, 5)	1m 9s
e2e_windows (windows-2025, 22, esbuild, 4)	1m 10s
e2e_windows (windows-2025, 22, esbuild, 3)	44s
e2e_windows (windows-2025, 22, esbuild, 0)	1m 52s
e2e_windows (windows-2025, 22, esbuild, 5)	42s
test	0s
e2e-snapshots	0s
Browser Compatibility Tests	0s
e2e-package-managers	0s
e2e	0s
publish-snapshots	0s
	15m 43s

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