Remove `no_dead_strip` marks #3113

Job	Run time
Check formatting	9s
Check MSRV	45s
Lint macOS x86_64	2m 29s
Lint iOS ARMv7s	2m 23s
Lint visionOS Aarch64 simulator	2m 19s
Lint GNUStep + exceptions	1m 24s
Lint header-translator	27s
Lint test-assembly	24s
Test macOS 15 Aarch64	1m 23s
Verify header translator output	56s
Assembly tests	48s
Check framework features	0s
${{ ((matrix.test && 'Test') \|\| 'Build') }} ${{ matrix.name }}	0s
Test Compiler-RT	31s
Test GNUStep with libobjc2 v1.9	57s
Compiler UI	48s
Test GNUStep with libobjc2 v2.0	1m 10s
Test on iOS simulator w. dinghy	0s
Test GNUStep with libobjc2 v2.1 on nightly	55s
Test GNUStep 32bit	1m 5s
	18m 53s

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