Remove unused core dump handler code #3809

Job	Run time
linux-coverage / initialize	27s
linux-coverage / initialize	27s
linux-coverage / docker-build-image	1m 11s
linux-coverage / docker-build-image	1m 11s
linux-coverage / docker-unittest-image	36s
linux-coverage / docker-unittest-image	36s
linux-coverage / linux_devel	8m 55s
linux-coverage / linux_devel	8m 55s
linux-coverage / linux_debug	6m 19s
linux-coverage / linux_debug	6m 19s
linux-coverage / linux_qa	5m 48s
linux-coverage / linux_qa	5m 48s
linux-coverage / linux_gold	4m 48s
linux-coverage / linux_gold	4m 48s
linux-coverage / linux_coverage_test	49m 18s
linux-coverage / linux_coverage_test	57m 50s
linux-coverage / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
linux-coverage / ${{ matrix.name }}_on_device_${{ matrix.shard }}	0s
	2h 43m 16s

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